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year ago, we coined the word e-ons for the stretch of time that early adopters have to wait between the announcement of new technology and its actual commercial availability. We heralded Google Glass as a likely game changer – both for the wearable tech sector and for our own. E‐ons passed, and Google Glass came and went. We were not the only future‐watchers who were blind‐sided when Google took the surprise decision to ditch their new‐born; Google Glass went obsolete before it ever got much beyond the prototype stage. Of course, the history of invention is littered with failures, short‐ lived successes and technological dead‐ends. Thomas Edison built a reputation as one of the most prolific and successful inventors in history, but even Edison had his failures. Among the schemes he experimented with were plans to add sound to moving pictures through his Kinetophone. After 20 years of experimentation, Edison abandoned his efforts, but ‘the talkies’ eventually emerged nonetheless. Though Google Glass has bitten the dust, the fusion of eyewear and computing is equally inevitable. Google has already partnered with pharmaceutical company Novartis – parent company of Alcon – to develop a smart contact lens to monitor blood sugar for diabetes sufferers. Rumours abound over the development of similar technology to implant, for example, camera chips in a smart contact lens. Predicting the future is notoriously hazardous and usually inaccurate. If science fiction had got it right, we should all by now be flitting about in flying cars. On the other hand, we might have expected to have to wait till the 24th century to use Star Trek‐style personal communicators or tricorders; but mobile phones and Apple iPads arrived three‐and‐a‐half centuries ahead of schedule. Smart eyewear may still not have arrived, but it could yet be here in the blink of an eye.

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CONTENTS August 2015 Volume 44 · Number 374

INTERNATIONAL SCENE 2 · Lenses to cure short sight

OUTLOOK 4 · Brazil partnership 5 · Public attitude to UV light 6 · Smart glass of the future 7 · International Vision Expo West, 2015

FEATURES 8 · Is the optical value chain collapsing? 12 · Europe’s First Optometry Professor honoured at 90 15 · Europtica International celebrates 25th Anniversary 16 · DigiCon Europe hosted by Schneider GmbH 18 · Survey Bifocals and Trifocals

OPTIPRODUCTS 25 · Barrel aligning plier 26 · Lens edging revolution 28 · Automatic lens tinting machine

Copy dates:

Associate Editor: Selwyn Ward LLB, FRSA

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MARKETPLACE 30 · A to Z of optical websites 31 · International Suppliers Guide

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The Magazine Printing Company www.magprint.co.uk ISSN 0969-1952

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August 2015

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InternationalSCENE

Lenses to cure short sight orld wide, myopia accounts for the large majority of corrective lens demand outside the presbyopic sector (and, of course, myopic presbyopics remain an important element in the end-consumer market). Today, the incidence of myopia substantial enough to require correction, -0.50D or higher, is up to well over 75 per cent among pre-presbyopes in South East Asia and China, and to an estimated 23 per cent even in Western countries such as the UK (possibly higher, around 30 per cent, in North America). One expert has speculated that over half a typical Western population could be myopic by the mid-century. Traditionally, close work has been considered as a major cause for the typical development of myopia in childhood and adolescence, a belief borne out by data which showed the lowest incidence of short sight in people and societies with non-bookish, huntergatherer lifestyles. Other factors such as genetics, family heredity and inter-racial anatomical differences were also cited as leading to myopia, but the image of the short-sighted bookworm (or, today, the computer-screen nerd) was always predominant. This theory has recently been refined, evolving into the suggestion that myopes are encouraged, if not

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created, by childhoods spent too much indoors, out of bright natural light, even if indoor time is not devoted to the book or screen. This has, for example, reportedly led to the Beijing Institute of Ophthalmology conducting trials of ‘glass box’ style classrooms and of lessons taken outdoors. The move is said to have reduced new cases of myopia in secondaryschool age children by almost a quarter: a worthwhile achievement in a population where myopia is now almost the norm rather than the exception. It would be interesting to know what measures were used to ward off summer heat stroke and glare headaches in the glass-walled classrooms, or combat UV-induced eye risks in children taught out of doors.

Influence of contact lenses When plastic contact lenses were first marketed in the years following the Second World War, their pioneers made confident predictions that this new mode of vision correction would ‘soon’ render spectacles for short sight obsolete. Again, when Wichterle of Czechoslovakia in the then Soviet bloc introduced soft (hydrophilic) contact lenses, the object was to offer a mass-market, easily applied, alternative to spectacles. To date, this has not happened.


InternationalSCENE The highest rate of market penetration achieved by contact lenses, in America, is thought to be well under 20 per cent. Pre-presbyopic myopes are by far the most substantial group of contact lens end-consumers.

Orthokeratology Now, however, a branch of contact lens fitting which first sprouted in the early plastic contact lens era is again the focus of assertions that spectacles, at least for myopia, are about to be superseded. ‘Lenses to cure short-sightedness!’ trumpeted consumer press headlines earlier in the summer. This is orthokeratology. Over the last couple of decades, a dedicated group of eyecare professionals mainly in North America, has developed the principle of orthokeratology (which implies the use of contact lenses to alter corneal shape) using specially made soft lenses worn overnight by children. Under closed lids, in sleep, the cornea is ‘massaged’ towards a flattened contour, countering the myopia-inducing effects of an elongated eyeball. Trials carried out at, among others, the Hong Kong Polytechnic University, among children aged eight to 14 (average starting age 11) appear to have shown that if lenses were worn overnight, every night, for three years, myopia progression ceased permanently. Risks? Yes, including a two per cent chance of potentially sight-threatening corneal ulcer. Does corneal flattening affect the rate of elongation of the eyeball, which helps to account for a higher risk of retinal detachment and other sight-threatening conditions even in moderate myopes than non-myopes? What are the implications for later contact lens wear, should it be needed, given that experts seem agreed most individuals’ wearing lifetime is finite? And is it right to talk of ‘curing’ myopia, which in modern time is generally agreed not to be a medical condition? An ophthalmologist speaking at the 2015 British Contact Lens Assocation Conference asserted that even low myopia worldwide represented a public health epidemic in waiting. Experts such as paediatric optometrist Gordon Ilett of the UK’s Association of Optometrists have called for large-scale population studies to prove efficiency; in the meantime, perhaps the spectacle industry still has time for preparation to meet this latest worldwide contact lens challenge.

How are Greek eyecare professionals and their suppliers coping as the country lurches further through its ongoing debt crisis? As this column went to press, Greece had already committed an unprecedented default on its repayment of debt to the International Monetary Fund) and had then returned an emphatic No response in a lighting nationwide referendum asking whether Greeks were ready to accept swingeing budget cuts in exchange for continuing membership of the Eurozone. Pundits across Europe pointed out that the EU offer on which the referendum was based had already been withdrawn anyhow! Banks were limping along day to day on EU handouts characterised as niggardly and the Greek man or woman in the street was limited to a daily €60 (£40) withdrawal from patchily supplied cash machines, while an emergency Eurozone summit on whether to offer a fresh bail out was awaited. Business was reported at a standstill owing to financial problems. From a British onlooker’s perspective, the way the crisis has been handled hardly seems to have reflected well on either side. Eurozone negotiators have appeared disunited and inconsistent in their approach; the Greek ‘side’ meanwhile has fluctuated from seemingly abject capitulation at one moment to strident accusations of IMF ‘criminality’, laced with threats to sue the EU for damages.

Eurozone exits Has this been too high a price for the retention of Greece in the Eurozone? This is a country with a population under 11 million which contributes only some two per cent of Eurozone Gross Domestic Product, and that was before the crisis, since when a third of Greece’s own GDP is estimated to have been lost. How much more damage, if not to Greece then to the Eurozone as a whole, could the dreaded Grexit do? Quite a deal, seems to be the verdict. Once one country leaves others are more likely to follow, while the Eurozone as a whole could lose integrity, face, and aggregate trade and negotiating power. And what of the British exodus from the European Union which could follow an ‘out’ vote in Britain’s in/out referendum, due to take place by the close of 2017? If a threatened Grexit makes headless chickens of so many high panjandrums, whatever would the serious threat of a Brexit do?

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BRAZIL

Lensware International in strategic partnership with Grupo Acert Lensware International and Grupo Acert initiated a major

the management of stores and labs, with automatic and

move with the intention of bringing innovations into

reliable data processing between the ERP and the lens

the Brazilian optical

production.

industry.

Dr. Bernd Freyer-

The companies have

muth, CEO of Lensware

finalised a strategic

International, com-

partnership

under

mented ‘It is an im-

which Lensware Inter-

portant step for our

national, a leading

company,

company offering lab

Brazilian customers. By

management systems, and Grupo Acert, a company focused on

and

our

performing our first Jorge Rocha, Grupo Acert, Dr Bernd Freyermuth CEO, Lensware International, Randerson Suart, Richardson Suart, and Fabio Dessotti, Grupo Acert

common successful integration, Grupo Acert

innovations in the Brazilian market, not only to have local

showed their high level of competence and the professional

representation with competent local assistance, but to be

commitment of all their team. I am delighted to have

able to offer an efficient and fully integrated solution for

them as partners’.

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AUSTRALIA

Professor Nathan Efron, AC Former British Contact Lens Association president (1996-97) and Council Member (1992-99) Professor Nathan Efron been made a Companion of the Order of Australia in the Australian Queen's Birthday honours list. This is the highest national honour awarded to Australian citizens, and only eight such awards were made in the current round. Professor Efron been honoured ‘for eminent service to medicine in the field of clinical optometry, particularly to vision correction and corneal phys-

Professor Nathan Efron, AC

iology, as an academic, researcher and author, to the treatment of juvenile diabetes, and through executive roles with national and international professionals organisations’.

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UNITED KINGDOM

New chairman for AOP Kevin Thompson has been appointed chairman of the Association of Optometrists in succession to Lyndon Taylor. Mr Thompson, owner of an optical group in the North East and elected onto the AOP Council in 2007, described his appointment as chairman as ‘a huge honour and privilege’. AOP chief executive, Henrietta Alderman, said: ‘It is with great pleasure I welcome Kevin Thompson to his new role as AOP chairman. Kevin has some big shoes to fill as Lyndon has led us through a great period of change and improvement at the AOP. I am confident that Kevin’s experience in the optical sector, which is enhanced by his entrepreneurial credentials, perfectly places him to help lead the AOP into this exciting new chapter of challenge and Lyndon Taylor, former chairman with new chairman Kevin Thompson

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opportunity’.

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CANADA

Transitions survey public attitude to UV light Most Canadians (87 per cent) think sunlight is dangerous for their eyes, but, despite this, more than half of Canadians falsely believe that you only need to protect your eyes from the sun’s UV rays in the warmer, summer months. Results from the 2015 ‘Light and Glare’ survey from Transitions Optical, Inc. show that 87 per cent of Canadians agree that they should protect their eyes from the sun in July, but only 47 per cent say the same for the month of December. ‘Unfortunately, the survey results reveal a large group of Canadians who are still in the dark when it comes to understanding the importance of UV protection for the eyes year-round’, said Isabelle TremblayDawson, senior marketing manager, Canada. ‘We hope this data will urge more people in the industry to talk more frequently about the ways in which UV rays are present during the entire calendar year’. In addition to thinking that sunlight is dangerous to the eyes, Canadians also believe that blue light from digital devices (50 per cent) and overhead lighting indoors (34 per cent) can be harmful to the eyes as well. ‘It is interesting that there is so much higher recognition of the danger of UV rays, versus blue light, because Canadians actually report that they increased their time spent using digital devices (70 per cent) rather than their time outdoors (18 per cent) over the past five years’, said Tremblay-Dawson.

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UNITED KINGDOM

Specsavers support for VAO 30th Anniversary gala dinner International development charity Vision Aid Overseas reports that Specsavers will be the exclusive sponsor of its 30th Anniversary Gala Dinner taking place on Saturday, October 10, 2015, in Coventry. Specsavers, whose founder Dame Mary Perkins is an honorary vice president of VAO, has worked closely with the charity for several years supporting its programme in Zambia and working together on a number of different fundraising ventures.

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UNITED KINGDOM

The smart glass future of eyewear Bob Forgan, managing director of Southampton based

decisions to make as to whether they lead or follow as the

Waterside Labs, may have to change the title of his two

smart glass sector develops and EyeGlass World’s owners

presentations at this year’s Association of British Dispensing

National Vision Inc. have identified this area as one they

Opticians Conference in Manchester in September following

cannot afford to ignore’.

the new store opening by Eyeglass World in San Diego, California.

Eyeglass World, a leading retailer of affordable prescription eyewear, is the first national chain to launch a

Bob delivered his ‘Smart Glasses — The Future of

retail collection of prescription lenses for smart glass

Eyewear' presentation to large audiences at Optrafair

technologies in the US. The company recently celebrated

back in April and told OW 'this opening highlights the

the grand opening of a Vista, California location — the

exciting opportunities ahead and signals the fact that the

first of eight Eyeglass World stores planned for the San

future may already have arrived! Opticians will have big

Diego area by June 2016.

BELGIUM

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UNITED KINGDOM

Helmer Schweizer re-elected chair of Euromcontact

ACLM Contact Lens Year Book, 2015 The 2015 edition of the product manual of the Association

Euromcontact Annual General Assembly held in Brussels on

of Contact Lens Manufacturers lists technical details for

June 4, 2015 re-elected Helmer Schweizer, of Alcon, as

all the contact lenses, solutions and materials produced

chair for another two year period. This meeting gave an

by ACLM member companies, and covers the overwhelming

opportunity to all the members to review 2014 achievements

bulk of products available in the UK.

and major activities performed during the year as well as

As is the case every year, there are more than 100 new

during the first six months of 2015, and identify the key

products and changes to parameters, and many older

focus for the year(s) to come.

technology items have been removed.

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Simon Rodwell, secretary general of the UK Association of Contact Lens Manufacturers, was re-elected secretary of the organisation for two more years.

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UNITED KINGDOM

Lifetime Achievement Award in Contact Lens Education The International Association of Contact Lens Educators has presented the first-ever IACLE Award for Lifetime Achievement in Contact Lens Education. Professor Desmond Fonn received the award at a dinner at Manchester Museum on Wednesday, May 27 to mark the Third IACLE World Congress (May 24-28). His contribution to global contact lens eduction includes being a founding member of IACLE and its vice president for 15 years. Professor Desmond Fonn

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In Brief Marchon Eyewear, Inc., has extended its licensing agreement with Nike, Inc. for the exclusive design, production and worldwide distribution of Nike optical and sunglass collections. ★ VSP Global, America's largest healthcare organisation by membership has appointed Jim McGrann, current VSP Vision Care president, president and CEO of VSP Global, effective October 1, 2015. He succeeds Rob Lynch who has served as CEO since 2006. ★ The British Contact Lens Association recently welcomed Brian Tompkins as its new president and Keith Tempany as president elect. ★ Adkens has entered into a new partnership with US optical distributor Triumph Optical. ★ Bob Nahmias, CEO of Hilco Vision for the past 17 years, is retiring. He will be succeeded by Ross Brownlee, who in addition to his role as CEO will also be a member of the board of directors. ★ The British Contact Lens Association is working with the Netherlands Contact Lens Congress to run a research symposium as part of NCC 2016 in Veldhoven, Netherlands, on March 13-14, 2016.


UNITED KINGDOM

Vision Care for the homeless The UK's homeless are struggling to function with pre-

about going into a High Street opticians’, said charity

scriptions of up to —20.00 dioptres. This is just one of the

chair, Elaine Styles.

findings of volunteer optometrists at Vision Care for Homeless People.

The complete optician’s practices are kitted out with equipment donated by many

‘Some professionals are put off from

UK companies. ‘Suppliers have

volunteering because they don't

been so generous: it was always

know who they’ll meet. The

my aim to provide a com-

majority of those who come

prehensive optician's prac-

to us for help are margin-

tice, but within an approach-

alised people who live in

able environment for home-

hostels or are sleeping on

less people. So far we have

a friend’s sofa: they just

seen more than 9,000 pa-

do not feel comfortable

tients’, added Elaine.

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Elaine Styles with patient

UNITED STATES

International Vision Expo West 2015 International Vision Expo & Conference takes place this year at the Sands Expo and Conference Center in Las Vegas, Nevada (Education: Sept. 16-19, 2015; Exhibition: Sept. 17-19, 2015.) The conference showcases company and product innovation across 190,000 sq. feet of exhibit space and offers more than 320 hours of education where eyecare professionals will learn how to expand their level of patient care and enhance their business acumen. As usual, there will be a full programme for lab owners and managers at the Optical Lab Division meeting. In response to requests from attendees.

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Transitions expand Dragon partnership Transitions Optical, Inc. and Dragon of California have announced an expanded product portfolio, launching EnduroX trail sunglasses with Transitions adaptive sun lens technology, ideal for mountain biking and trail running environments. Last year, Dragon Alliance and Transitions Optical partnered to produce a snow goggle with Transitions adaptive technology incorporated into the goggle lenses.

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Is the optical value chain collapsing? asks Consultant Editor Dick Chaffin he value chain is made up of the following steps: the raw material suppliers, the lens manufacturers, the laboratories (wholesalers), and the dispenser/retailers. How has this traditional value chain changed? One reason is only a few large companies dominate the optical marketplace. They are Essilor, who is undoubtedly the world leader, followed by Hoya and Zeiss. These big three follow policies that have blurred and collapsed the traditional value chain. They have reached out as lens manufacturers, moving into the next level, the laboratories and even to some extent the retail marketplace. The raw material suppliers to the lens manufacturers are large multi-industry companies that supply either glass or plastic. The primary suppliers of glass are Schott and Corning. The major suppliers of plastic for lenses are PPG Industries and the Mitsui Group. In each case their optical business is a profitable but very small part of their overall business. In the next step, the lens manufacturer turns raw materials into a finished product. Finished and semi-finished single vision and multifocals provide slim margins while progressive lenses are

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highly profitable. Photochromic, polarised, and high index lenses also provide large profits. The laboratory is the next level in the value chain. It makes its profit according to what type of lens and add-ons are sold. The laboratory’s cost of surfacing an Rx for either a single vision lens or a progressive lens is the same. However, the charge for surfacing a progressive lens is much higher, providing the laboratory with a substantial profit. The laboratory may service the dispenser with uncut lenses or lenses mounted in the frame. Dispensers are the big winners profit wise in the value chain. They sell glasses at a markup that is generally three or four times their cost. These mark ups make progressive lenses very expensive and even more so when add-ons such as antireflection or polarisation are included. Clearly, as the major lens suppliers have demonstrated, the more you move down the value chain the more profitability. This mobility or encompassment is one of the causes of the value chain collapse.

Technology The major changes in the structure of the optical business can all be connected to advances in tech-


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nology. Starting with the discovery of an organic material that had excellent optical properties as well as lightweight and safety, ADG or CR-39 came out of WWII research. The diamond generator was also a post WWII development, making the roughing of a toric surface for the laboratory quick and accurate. Next came photochromic lenses in glass and later in plastic where amazing technology involved physical and chemical reactions to UV energy in light. The computer changed laboratory surfacing from hand figuring curves and resultant powers to programs that were quick, easy and non-skilled. The design and technology to produce progressive lenses required new technology. Single point diamond cutting using multiple axis computer programs evolved. Progressive lens surfacing requires new technology to go directly from the generated surface to a polished lens. Additionally, the laboratory is no longer burdened with the investment and requirement of inventorying large amounts of surfacing tools (laps) for each curvature. Automation is available to generate, rough, smooth, and polish a surface in one operation without human interference. Two lenses of different corrections can be ground simultaneously on one machine. Machinery makers are continually improving and simplifying the process of lens making. The result is a semi-skilled worker can produce a prescription in 40 minutes or less in an environmentally friendly smaller space.

Diverse strategies In the early 1990’s Essilor, a combination of Silor and two other French lens manufacturers (BBGR), developed a market strategy that emphasised the laboratory as the key to marketing its lenses and growth in world optics. In different European countries Essilor bought leading laboratories either as BBGR units or as Essilor laboratories. These laboratories promoted separate lines of products to compete in the same marketplaces. In the United States Essilor not only bought laboratories but also pursued a strategy of advertising its lens brands (Varilux, Crizal) directly to the public. Recently, with the purchase of all of Transitions Optical, it is even more consumer oriented. Hoya has followed a similar strategy except it has focused on the dispenser. Hoya has not marketed directly to the consumer with brand recognition. The laboratory is still the key to

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selling its products. However, Hoya has bought fewer laboratories. It has concentrated in certain geographic areas with larger capacity laboratories of its own. Hoya has directed marketing at the 3’Os to solicit business for its laboratories. Zeiss is somewhere in the middle of these two strategies. Zeiss has a very strong brand name but does not use it to full advantage with consumer advertising. They have acquired some laboratories and have the Sola distribution and laboratories. They are still feeling their way along with the combination of Sola and Zeiss products. Their strongest appeal is to the independent laboratory and dispenser. Zeiss is a strong competitor for the laboratory business with well-received progressive designs and a proprietary photochromic lens process.

The dispenser/retailer The optical dispenser level of the value chain is also a source of the collapse of the traditional steps. There are large retail chains that operate worldwide and maintain their own laboratories. In Europe Fielmann and Grand Vision are multiple retailers. In the UK and on the continent Specsavers is a large chain dispenser with their own laboratories. The US Lenscrafters and Sunglass Hut worldwide belong to Luxottica. With their ownership, Luxottica is not only a frame manufacturer but also a laboratory owner and dispenser. They also manufacture their own sunglass lenses, combining three steps in the value chain. More and more the value chain becomes meaningless as the major players in the business take over and move closer and closer to the dispenser/retailer and the consumer.

The future The eyewear business is now a global business. Even in the emerging marketplaces there are only a few independents. Independent lens manufacturers, independent laboratories and independent dispensers are being taken over. Automation with machinery that fits one-hour service from Essilor/SatisLoh, Schneider, OptoTech and others will change the industry where the laboratory is the dispenser and the dispenser is the laboratory. Only a few large global companies will dominate the optical industry. There will always be some exceptions but they will be small and in special places for special reasons. Today, that is the future of the optical world.


Europe’s First Optometry Professor honoured at 90

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he Division of Optometry and Visual Science at City University London held a one-day symposium in June to mark the outstanding career of Emeritus Professor Robert J. Fletcher on the occasion of his 90th birthday A unique and outstanding career of unbroken service to optometric education lasting seventy-four years was celebrated at the university and remarkably continues. Emeritus Professor Robert Fletcher, Europe’s first Professor of Optometry appointed in 1966, has never really retired. At the age of ninety, he has a current scientific paper jointly with Italian ophthalmologists in press, a follow-up study to one published in 2014 on colour vision changes in Parkinson's disease which appeared in a specialist Italian medical journal. Over seventy former students and colleagues gathered to celebrate this outstanding career. One had come from the USA to pay tribute and there were several from mainland Europe and Scotland. Five from one of his first groups who were taught between 1950 and 1953 made the journey from the north of England, themselves aged in their mid 80's and four more of their contemporaries sent greetings. This happy celebration day of reunion and tribute featured invited formal presentations by former students of Robert Fetcher who themselves had become leading optometric educators and cli-

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nicians within Europe. Many were also former colleagues either in London or in Kongsberg, Norway or Rome, Italy where Professor Fletcher had been asked to establish courses. In addition to Norway and Italy, where repeated courses were given by Professor Fletcher in his retirement years, he established courses at the request of governments and universities in Hong Kong, Malaysia, Nigeria, Ethiopia, Israel, Iceland and Portugal, as well assisting in the development of university courses in New Zealand and Australia. All fourteen invited speakers had been chosen as his former students and/or colleagues; many had co- authored fundamental textbooks with him, the majority still widely used by students of optometry in many continents today.

Professor Fletcher, pictured here with his wife Muriel, was presented with a University tie


with degree status at the Buskerud University in southern Norway. In the early 70’s joint discussions began between Fletcher and his former Norwegian student, Jacob Hultgren, together with the Norwegian Health Ministry to establish much needed optometric training in the country. Equally appreciated was the account by Luigi Lupelli, his former student, now Professor of Contact Lenses at the University of Rome Tre, with whom Fletcher has collaboFront row – Professor Fletcher and his family. Back row – Norwegian teachers and speakers rated in joint research projects Richard Pearson and Judith Morris spoke of his and text book preparation since the 70’s. Together pioneering work on scleral contact lenses and ocu- they had taught a whole generation of Italian stular prosthetics in the 1950’s and the introduction dents of optometry who came from throughout of contact lenses to the three year courses that he Italy to Rome to learn using the British model. introduced in the 1950’s. Others spoke of the humanity, personal kindness Professor Fletcher’s legacy of the design and and generosity of both Professor and Mrs Fletcher introduction of both undergraduate and post- in welcoming concerned international students graduate degrees in the 60's was a central feature to their home at times of war or crisis in their of the summary by Simon Barnard who also spoke homeland. of his contribution in establishing three year coursThere were tributes, too, from second generaes in other countries based on the UK model. tion international students, one the daughter of Professor John Barbur of City University spoke of the first optometrist in Malaya who came by boat the contribution Bob Fletcher had made to under- in 1952 to train in London and to whose five chilgraduate and post-graduate courses in physiologi- dren Professor and Mrs Fletcher subsequently cal optics, unique outside the USA in the late 60’s. became guardians when they were sent to boardHis leadership roles in the Colour Group of Great ing school in the UK. One of these daughters studBritain and the International Colour Vision Society ied optometry at City University and subsequently were also outlined as was his vision to establish the undertook a PhD in optometry under Professor Applied Vision Association in the 60’s; all three Fletcher's supervision. associations continue to thrive and aid collaboraThe surprise finale to the day was the showing of tion between visual scientists and clinicians inter- a half hour colour film made by Professor Fletcher nationally, each with hundreds of members. in 1958 to promote the department and profession Professor Chris Hull, current head of the Division among schools. of Optometry at City University spoke of the legacy that that he had passed on as the longest serving head of department during a time of great expansion from the 60’s to mid 80’s. Perhaps the most poignant of the contributions came from his four invited former students and colleagues in Norway, who described how over four decades Bob Fletcher had made over fifty visits to educate a whole generation of optometrists in that country and established full time courses which have evolved Four classmates from early 1950’s Mr and Mrs Harvey, Tom Bond and Frank Barroclough

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Europtica International celebrates its first 25 years

T

his summer, Europtica International Ltd cele- aled to considerable acclaim within a leading retail brates 25 years supplying an increasingly glob- store location within the UK. The Americas and alised lens industry with specialist fluid filtra- Asia, including China, are major markets for this tion and management equipment. When Europti- technology with favourable receptions reported. ca’s founder Tom Wardle established the company Europtica’s exports benein July 1990, his original plan was to focus on fit from a working partnerrefurbished lens laboratory equipment ship with Coburn Technolosales. But this would soon change. gies. The two firms focus Having previously been primarily on specific prodgeneral manager of uct areas, reflecting the Norville’s international specialist of each in wet Autoflow machinery diviand dry edging technolosion, Tom Wardle was gies. The partnership also uniquely well placed to aims to maintain essential track the changing needs high standards of advisory of the lens processing and after sales service. Euro Aquasave industry worldwide. He saw What of the future? an opening for fluids management technology Expansion of Europtica International’s horizons, which should offer better, more consistent produc- with further development and marketing of the tion quality with the cost-saving associated with Kleenchill Compact range. ‘It is always essential to the reduced wastage. monitor this changing Thus Europtica’s primary market so we can continue market and mission were to fulfil its requirements’, identified. says Bob Gascoyne, To reflect this, the young appointed general managcompany relocated within er in February 2011 as Tom its first year from start-up Wardle planned for his premises at Apsley Guise retirement. to its larger present locaMr Gascoyne’s backtion at Hulcote, Milton ground in engineering has Keynes. included time with a comAlso in 1991, Europtica pany providing compoEuroptica stand at Optrafair launched its initial Euro nents and coating for no Kleenchill SF8, with SF10/12 and SF16 following in less a project than the large Hadron collider. 1992 and 1999 respectively. SF denotes ‘small footLater in 2011, Tom Wardle effected the sale print’: equipment designed to meet the space-sav- of Europtica International to the ing needs of laboratories today. A high-restricted Bridgwater Brothers Group. This low profile (LP) series was initiated in the year 2000. family company, active in Britain Through the Noughties, Europtica continued to since the 1920s, provides cenrefine on and add to its product range. With the tralised management functraditional divide between optical laboratories and tions and services for a diversity retail stores becoming blurred, the firm responded of specialist, high-end manufacthrough the development of its Kleenchill Geno turers across the UK, including systems designed to manage fluid supply, filtration, Royal Warrant holders. ‘So temperature control and ultimate disposal for lens Europtica fitted our busigenerators and bench edgers. The Aquasave AQS ness model nicely. We system marked a milestone in 2002 with Kleenchill look forward to supporting Geno A in 2005, Geno B and C Systems in 2010, continuing progress internaThis year has seen the successful innovation of tionally’, comments third-generthe Kleenchill Compact range, a focus of major ation group managing direcGeorge Reynolds, Bridgwater Brothers Group MD interest when exhibited at Optrafair 2015 and tri- tor George Reynolds.

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August 2015

15


Schneider’s DigiCON Europe uring the period of June 17-20, 2015 Schneider GmbH & Co KG welcomed more than 100 international guests to DigiCON Europe at its headquarters in Fronhausen, Germany, where they enjoyed an interesting programme of lectures and workshops centred on new production lines, machinery and techCompany founder Gunter Schneider nology. The audience had welcomes guests the chance to explore Schneider’s next steps forward in free-form history. In his welcoming speech, the company’s founder Gunter Schneider explained his fascination for spectacles, outlining the history of the

Workshop group at Schneider's Modulo Line

ophthalmic division that started in 1993 with the development of machines to manufacture atoric lenses. By realising this aim the vision of free-form lenses was born. Pioneering the free-form idea in the ophthalmic business, the company were able to produce machines which substituted all previous machines and methods for lens production. Each day – following their mission statement ‘Fascination for Innovation’ – it is the firm’s goal to 16

www.optical-world.co.uk

develop machines and processes to perfectly replicate the physiological design.

Day one

The opening day of DigiCON 2015 focused on the philosophy, machine extensions, the first production supervision system, called Control Center, and experiences – all belonging to the Schneider Modulo Line. In 2008 it became obvious that a maximum of flexibility and lower production costs to produce high quality lenses could no longer be achieved only by optimising single machines. The Modulo Line captures the vision of a systemic approach in which all elements, measurement systems, conveyors and accessories are interlinked in one intelligent system. With the Modulo Control Center, which was a core element from the beginning of the Modulo Line development, Schneider opened up a new world of innovation: this control system, being the first of its kind, is an essential component for controlling the whole machine network with a minimum of effort and a maximum of good information. In addition to that, DigiCON attendees had the opportunity to learn more about the machine extensions all being interlinked in the Modulo system and covering the production processes, deblocking, tapestripping, cleaning and coating. Two highlights represented the brand new EBC 600 and EBC

Gunter Schneider's lecture on the Schneider Control Centre


introduction of the Nano Line. This extra small and cost-effective line covers all needs of startups as well as small and partner labs and allows them to produce free-form anywhere. Despite its small size, the line offers the same flexibility that the bigger production lines provide, with no compromise on geometry, range or lens quality. Other special presentations gave an overview of the current status of blocking technologies, or auxiliary systems and consumCompetitors assemble for start of the Kart racing competition ables for best efficiency. The last 1400 box coaters. Other presentations focused lecture focused on Schneider’s new customer on the HSC Modulo XT, the new benchmark in support center and its dedicated service conhigh speed cutting, as well as the HSE Modulo, cepts. the new performer in double spindle edging. During both conference days, guests were Schneider project managers presented in- invited to take part in some exciting workshops sights and experiences about the implementa- gaining hands-on experience and sharing tion of three selected Modulo Line installations knowledge and thoughts. Besides giving deep in China, Lithuania and the insights into the Modulo and Nano Line as well United States. By focusing as new coating, cleaning, tinting and edging on special project requiretechnologies, a fifth workshop ments they demonstrated informed about the the firm’s ability to delivcontrol centre and the er fully integrated solulab management systions for various detem. mands. Following the success of the Kart Racing competition in 2012, on FriDay two day evening competitors In the morning of the were invited to take part second day Schneider in the DigiCon Kart Race presented its line and this was followed by a solution for midsize Drivers on the barbeque. labs: the Sprint Line. By starting block The program ended with a paying attention to cleaning and coatday-trip to Frankfurt on Saturing solutions they demonstrated the extension day. After visiting a famous possibilities of this worldwide well established apple wine press house guests went on a boat production line. Another focus of the second day was the trip on the river Main.

Attendees pictured on the daytrip to Frankfurt

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August 2015

17


Bifocals and Trifocals Although progressive lenses have become ever more popular, bifocal and, to a lesser extent, trifocals are still available in a very wide range of types, materials and indices. The reasons for this can be seen when we look at the various attributes of the lens designs and the uses to which they are put.

Tony Jarratt, Technical Editor

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hen considering the need

achieve focus at near to intermediate

tion does introduce its own problems.

for the various types of

distances. The emmetropic patient will

The use of two pairs is fine if the user

spectacle lenses, we need

not require any correction and the myope

only needs to change from one to the

to take into consideration the distances

will only require help for distance – using

other occasionally, for instance someone

at which various everyday tasks have to

distance single vision lenses. Moderate

working outdoors who only needs to

be performed. These tasks are undertaken

to high hyperopes may well require lenses

view something at a close distance every

at distance, viewing an object from about

for distance, but will normally be able

now and then. But for the office worker

a metre to infinity, intermediate, viewing

to use the same single vision lenses for

this solution would be impossible: chang-

an object between about a metre and

near work, using their accommodation.

ing from one pair to the other would

the normal reading distance of 25 to

As age increases, the available accom-

33cm, or near, viewing an object at or

modation is gradually lost and a correction

To overcome this problem of frequent

about 25 to 33cm.

have to occur very frequently.

for near work and sometimes interme-

changes, the first bifocal lenses were in-

These distances will vary considerably

diate will be required (the near addition).

troduced, followed by trifocal and even-

from one person to another and also

This requirement can sometimes be met

tually progressive addition lenses. Each

depending

being

by the use of two pairs of spectacles –

has its advantages and disadvantages,

undertaken.During early to middle age,

on

the

task

one for distance use and the second for

which are summarised in the following

the eye can exert accommodation to

near / intermediate. However, this solu-

table:

Table

18

www.optical-world.co.uk


There are, of course, many other ad-

– the near zone probably provides the

Of these designs the fused (glass)

vantages and disadvantages according

correct focus for the keyboard, but an

and solid (resin and glass) are in general

to the use to which the lenses are to be

intermediate distance is required for

production, but Franklin-split and ce-

put, but those shown in the table are

the screen, and ‘normal’ everyday’ pro-

mented versions can be obtained from

the most frequently encountered

gressives don’t provide this.

some suppliers to special order.

Another problem arises for the motor

The Franklin-split lens is produced

Recent usage

mechanic who is required to work un-

by edging two lenses for the right eye

From a survey published by the Optician

derneath a car whilst lying prone. He

and two lenses for the left, so that all

(29.02.2008) the United Kingdom market

(or she) will need to look ‘above’ the

fit the frame. Each lens is then cut in

for the three types of spectacle lenses

normal line of vision to see work on

half (or as required) and flat edged

was then split: Single vision, 71.8 per

the chassis and a progressive with its

along one side, so that when re-inserted

cent, progressive, 17.6per cent,,

near portion at the bottom of the lens

into the frame they form one ‘lens’.

bifocal/trifocal, 10.6 per cent. This split

doesn’t work correctly for this task.

Normally the upper lens will be for

was only for the UK market and it is not

Although progressives are eminently

distance and the lower for near or in-

possible to obtain similar figures for

suitable for the vast majority of everyday

termediate, but any combination is

worldwide usage, but it must be an in-

activities, they do not, as has been

possible.

dicator of the approximate usage in the

shown, provide the ultimate answer to

Cemented, as its name implies, one

‘average’ country.

every visual task. Often these more spe-

section of the lens (the segment) is

cific tasks can be better served by the

cemented, using epoxy resin, to a main

use of a bifocal or trifocal.

carrier lens. This has the advantage of

Since this survey the move to progressives has increased, so the percentage usage of bifocals and trifocals

Because of these limitations, the man-

flexibility in the use of centration and

will have decreased since then. From

ufacturers of progressives have gradually

prism power, but suffers from the visible

this, it can be seen that progressives

developed some special designs, in-

segment edge. Only available in glass

have taken the major share (approxi-

tended for specific uses – such as com-

and from a very limited number of

mately 62 per cent) of the market for

puter / VDU use and the office envi-

suppliers.

lenses used to correct presbyopia. How-

ronment. They have also introduced a

Fused. A segment of higher index

ever, they do not necessarily offer the

variation – the ‘degressive’. Here the

glass is heat fused into a depression in

best solution for all tasks.

major portion of the lens is the near

a main carrier lens (normally spectacle

Their main disadvantage is the nar-

zone and the lens power is calculated

crown n=1.525). This has the advantage

rowness of the intermediate corridor

so as to ‘reduce’ towards the distance

that several segment sizes and shapes

and near zone. This is where a bifocal

zone, rather than the other way around.

can be supplied to a large range of

scores. It can offer a much wider field

This allows the designer more latitude

powers. Can only be supplied with the

of view, particularly for close work.

when considering the lens form.

carrier lens in 1.5 and 1.6 indices, as

The narrow field of view of progres-

the segment has to have a higher index

sives means that they can be difficult

Bifocals

to supply the addition power. Can suffer

to use by, for example, artists, particularly

Bifocals have been with us for well over

from chromatic aberration in higher

those painting landscapes where a large

two hundred years. it is generally accepted

power additions. Only available in glass.

wide field of view is required at the in-

that they were first described by Benjamin

Solid, means made from one piece

termediate distance of the canvas. Here,

Franklin in 1784 and can be sub-divided,

of material – either glass or resin. Very

a lens with a small distance portion and

by their general construction, into four

few glass solids are produced now as

large near portion is indicated (usually

main types: Split or two-piece – two

the cost of production is relatively high

an upcurve design).

pieces of lens material (usually the same)

and the use of resin materials has increased.

Modern lifestyles haven’t helped ei-

held edge to edge in a frame (Franklin-

ther. Many of us spend large amounts

split); Cement , two pieces of material

Blended. With the increased use of

of time in front of the computer and

(usually the same) – one cemented onto

free-form technology, some manufac-

are required to view a screen at about

the other; Fused, two different types of

turers now offer ‘bifocal’ lenses with a

arm’s length and the keyboard at a

glass (different indices), one fused to

virtually invisible ‘blended’ near segment.

closer distance. Normal progressives

the other; and Solid or one piece –

These segments can be round in shape

aren’t completely successful – the fo-

ground / cast or moulded from one single

or ‘D’ shaped – with variable prism and

cusing distances are difficult to reconcile

piece of glass or resin.

decentration.

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August 2015

19


Trifocals

The main carrier lens (normally the dis-

finite distance below the segment top,

Trifocal designs have had a much shorter

tance portion) will have its optical

the new added effect will be base down

life and have never become universally

centre placed at or near the geometrical

prism. The effect of this extra prism

popular. A trifocal lens was the subject

centre (sometimes this is decentred

will be to cause the apparent position

of a patent in America in 1911 by A J

nasally by a set amount to increase

of the object under view to move or

Boness) – but the main advantage of

the available decentration), so that

‘jump’.

the trifocal – the third focusing distance –

when the wearer looks through the

The amount of jump will depend on

has been superseded by the continuously

centre of the lens they will normally

the addition power and the size of the

variable addition of the progressive de-

be looking through or near the optical

segment – as these increase the amount

sign. However in certain circumstances

centre.

of induced prism will also increase.

a trifocal lens with its three distinct

However, when they need to view

The problem can be reduced by keep-

focusing distances can be the best

through the segment there will be a

ing the segment size as small as possible

answer.

prismatic effect due to the distance

(taking into account, of course, the re-

Both bifocals and trifocals are available

the eye has traversed from the O degC

quirements of the patient regarding

in a range of segment shapes and sizes,

of the distance carrier. Even if they are

segment size) and a few designs do not

each type suitable for a range of tasks

looking through the centre of the seg-

exhibit the effect. E-line bifocals are

and users. The range available can be

ment (which is unlikely) there will be

normally produced with the distance

classed by segment shape:

residual prismatic effect.

and reading 'centres’ on or very near

This problem is normally of no con-

the dividing line.

Bifocals

sequence when the Rx of the two eyes

It is also possible to produce some

Round shaped – normally available in

is reasonably equal (as happens in most

flat top and curved top segments with

the range 22mm to 45mm, although

cases), as the prismatic effect will be

the optical centre of the segment placed

there are a couple of very small segments

the same (or nearly so) in both eyes. If

at or very near the top of the segment,

on the market, intended for specific

the problem is too great to overcome

thus reducing or even eliminating the

users such as golfers.

(in cases of anisometropia for instance),

effect. This is not normally possible for

D Shape (flat top) – normally listed

it may be necessary to use a Franklin-

round segment bifocals, except in the

from 25mm to 45mm

split or cemented lens to correct the

case of a prism segment bifocal (prism

C Shape (curved top) – in a similar

imbalance.

controlled), where the prism within the

range

segment area can be controlled. It is

E-line (executive) – straight segment

Prism jump

also possible, with limitations, to produce

similar in appearance to the Franklin-

Another of the problems with bifocals

a jump free lens in cemented form, al-

split

and trifocals is prism jump. As the users’

though this is dependent on the Rx and

line of gaze traverses the lens when

addition power.

Trifocals

moving from the distance portion into

All of the above are available, but in a

the reading area, it experiences a sudden

Position of a typical segment

far more limited range. Trifocals are

change in induced prism.

on the blank surface

normally classified so as to indicate the

At the distance optical centre there

Diagram 1 shows the position and phys-

intermediate segment depth, for exam-

is no prism, but as the line of vision

ical characteristics of a curved top C28

ple, D728 or D7x28 – indicating that

moves away from this point the lens

segment bifocal. As can be seen, the

the segment has a 28mm diameter and

will exert an increasing prismatic effect

segment is 28mm wide and 19mm deep.

that the intermediate (inter) segment

due to the power of the lens. For a

The top of the segment is placed 5mm

is 7mm deep.

wearer with similar Rx in both lenses,

below the geometrical centre of the

the prism will be balanced between the

blank and physically displaced 3.5mm

two eyes and will not be noticeable.

inwards, with a further inset of 1.5mm.

Intermediate segments normally have a power of 50 or 60 per cent of the power of the reading add. Centration

However, as the line of gaze reaches

The diagram depicts a left lens viewed

the segment dividing line, the effect

from the back or a right lens from the

will be altered instantly by the added

front.

One disadvantage of a multifocal lens

effect of the addition power. As the

Figures 2 to 9 to Diagram 1 show

is the fact that it is not possible to have

add is always a plus power and the op-

some of the typical segment shapes

a true optical centre in the segment.

tical centre of the segment will be at a

currently available. These are:

20

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Trifocals:

Diagram 1 *Courtesy of Tokai — details for the Tokai 1.60/42 BF.

Bifocals:

6 Executive

1 Round segment – 22 and 24mm typical size

‘upper’ segment reversed – i.e. an

2 Round segment – 38 ad 45mm size 3 Executive

up and down curve trifocal) 8 Flat top – also available in a curved

4 Flat top - usually termed FT or D 5 Curved top – usually termed CT

Biofocals

7 Concentric (also available with the

top version. 9 Double D

Trifocals

SUPPLIERS

The following firms have kindly submied details of their lens ranges and the reviews are taken from these. Fuller details are obtainable from the manufacturers DAI

Round 24-28 and Ultex 40-45 (a ‘D’

zone (for example dentists), or those

www.daioptical.com

shaped blended reading area 40/45 in

who look for comfortable and wide far

DAI state that whilst the ophthalmic

size) and with this kind of technology it

and near vision, as if they were wearing

market is dominated by progressive

is possible to have lenses with variable

two different pairs of glasses.

lenses, the need of bifocal lenses is still

decentraon, prism, variable inset, etc.

All resin materials are available –

present; they therefore chose to invest

The surface that provides the transi-

from CR39 through to 1.74, including

in a new product that would improve

tion from far zone to near zone is very

polycarbonate and Trivex – with diam-

the results, both optically and cosmet-

light, almost invisible. For this reason

eters ranging from 41mm to 75mm ac-

ically, for bifocal lens users. This re-

Biiform lenses are aesthetically pleas-

cording to power. Powers run, accord-

sulted in the Biform the first bifocal

ing. The Biform Round lenses are suit-

ing to index, from -18.00 to +1.00 for

lens developed with free-form tech-

able for all those who fail to adapt to

both ‘segments’. Materials can be sup-

nology and available in all materials

progressive lenses but can’t bear two

plied in clear or Transitions, grey and

and all indices.

pairs of glasses. Biform Ultex lenses are

brown. The lenses are supplied as

Biform lenses are bifocal lenses with

suggested for those who perform ac-

finished uncuts and can be coated in

an invisible near zone available as

tivities that require a very large near

various ways:

22

www.optical-world.co.uk


Hard coated: • Dural – hard coated • Dural colour – a tintable hard coat • Scudo – hard coat with UV400 Hard and multi coated: • Dedcor – standard mutli coating • Acrotech – achromatic multi coating • Bluetech2 – multi coating with a blue reflex rather than the standard green • Bluescudo – multi coating with blue reflex and UV400

A 40mm round is listed in 76mm diameter and adds 1.75 to 4.00.

Powers range from –10.00 to +8.00 and cyl ranges are 4 and 6 according

Standard D segments are available in

to type. The largest range being the

D25, D28, D35 and an extra large D45.

Trivex D28 which covers -10.00 to

Adds range from 0.50 to an extremely

+8.00, with cyls to 6 and adds 0.75 to

high 8.00 (for a D28). Diameters are 71

3.50. Diameters are 65 to 70 according

to 80mm, again according to type.

to power. The executive is produced

Several CR39 trifocals are also listed.

in 65mm diameter, adds to 3.00 and a

These are a D28x7, D35x8, a double D

power range of -8.00 to +6.00, with

(28 segments) and an Execu ve. Adds

cyls to 4.

are to 3.00 (4.00 for the D28).

Rounding off the range is a trifocal

There are also a number of higher in-

in CR39. This has a flat top 28mm seg-

dex bifocals – 1.55, 1.6, 1.67,1.74 plus

ment with 7mm deep inter and a

polycarbonate and Trivex. Segments are

power range of –4.50 to +5.00, cyls to

shown as C28, D28, D35 and round 24.

4 and adds 1.5 to 3.000. The diameter

• Great tech – high end multi

Adds are available from 1.00 to 4.00 ac-

is 75/80.

coating with hydrophobic

cording to type and bases run from 2

The company also list three bifocals

properties

to 10, plus a –2 (D28). Diameters are

with free-form technology – the C28

from 65 to 76 mm.

Rounding off this

Trueform (1.5 and 1.6 materials) and

range is a Trivex trifocal – D28x7 in

the S28 Trueform in 1.5. The Trueform

76mm hardcoated, base 4 and 6 with

technology optimises the lenses for

adds 2 to 5.

wider fields of vision. Powers range

• Great tech no fog – as Great tech but supplied with cloth for no fog

Darwin www.vicozy.com

The company can also supply a range

from +8.00 to -10.00.

The Taiwanese company Darwin list a

of bifocals and trifocals, to special order.

flat top bifocal in polycarbonate and

This range includes most of the stan-

Norville

this can be supplied as a semi-finished

dard segment sizes and shapes, includ-

www.norville.co.uk

or in spherical finished powers. The

ing a CR39 bifocal with round 40mm

The Norville group list a very large

lens comes in 70mm diameter with

segment, an execu ve and a D28 slab-

range of bifocals and trifocals, includ-

28mm segment.

off – prisms 1 to 6 and adds 0.75 to

ing all resin materials and a number

Semi finished are listed in 2, 4, 6 and

4.00. Some bifocals are available with

of glass products. They also offer all

8 base curves and the finished range is

plano base. There are also a number of

the various standard segment shapes

shown as plano to +3.00 in 0.25 steps.

CR39 trifocals, including two double

and sizes, including some specials.

Both ranges are available with additions

D’s – with 28 and 35 mm segments. A

In CR39 they list standard round seg-

of +1 to +3, again in 0.25 steps.

number of items are listed in 1,55, 1,67

ments from 22 to 45mm diameter cov-

Excellens

and Trivex, including bifocals and trifo-

ering a power range of –8 to +8, with

cals.

adds to 4. Some specials are also

email: excellens.ltd@btconnect.com

For those requiring a glass substrate

listed – these include a 15mm segment

Excellens has an extensive range of

there are a number of bifocals (R22,

offered for golfers and watchmakers

semi-finished bifocals and trifocals,

D25 and D35)and five trifocals (D25 and

and a semi-lenticular with 22mm seg-

some available from stock and the re-

D35) all in 1.523 material. Rounding off

ment. This lens is an aphakic/ low vision

mainder to special order.

the catalogue there is a high index (1.6)

product in powers of +10.25 to +16.00

bifocal with D28 segment.

and with an extraordinary add range of

Stock items include a range of CR39 product, with segments from a stan-

+1 to +20 in 0.50 steps. Two similar

dard round 22mm right up to a D45.

Hoya

lenses are listed – a 22mm segment

Bases range from 2 through to 8 and

www.hoya.co.uk

with adds 0.50 to +20 and a 24mm seg-

diameters 71mm to 80mm, according

In their ‘conventional’ range of lenses,

ment with adds 0.50 to 15.

to type. The round segments are R22

Hoya use CR39, Trivex and 1.6 high in-

There also a number of other ‘spe-

in 74mm standard thickness and 71mm

dex for their bifocals. Segments include

cials’ including several lenticular/apha-

produced as a thick blank, plus a high

a round 28, D28 and C28, a D35 and

kic lenses and a bi-concave lens with

add version (4.50 to 6.00 in 0.50 steps).

an executive.

24mm round segment and powers of –

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August 2015

23


10.25 to –18.00. A ‘slab-on’ is also of-

The second lens, the Grandalit Bifo

fered. This has a 28mm round seg-

also has a C28 segment and covers a

www.shamir.co.il

ment placed 3mm below the centre

power range of –8.00 to +6.00 with a

As mentioned in the introduction to

line and with adds 0.75 to 3.72 in 0.25

similar cyl and add range. The Dufolit

this survey bifocals are a conventional

steps. Slab prisms can be supplied

1.50 S28 ranges from -6.00 to +6.00,

solution for the presbyopic patient.

from 1Δ to 15Δ.

cyls to +4 and adds 1.00 to 3.00, whilst

However they do introduce some trou-

Flat tops are available with 25, 28,

the Bifolit 1.50 C26 has an extended

blesome disadvantages from the visual

35, 40 and 45mm segments and the

power range of –13.00 to +10.00, with

point of view – the segment can be

bifocal range is completed by a C28

cyls to +6 and adds 0.75 to 3.00, 3.50

seen, furthermore, flat-top bifocals in-

bifocal and two executive styles. Ma-

and 4.00. Diameters are 65 and 70.

troduce a vertical surface discontinuity

terials include Transitions and NuPolar polarised.

Shamir

Finally, there is the Grandalux 1.50

resulting in a disturbing image jump

C28 (glass) with a power range

with loss of image as the eye moves from one visual zone to the other.

Several trifocals are shown, includ-

of –10.00 to +8.00, cyls to +4 and adds

ing two F28 with 7mm inter and a 35

0.75 to 3.5final l0. Diameters are 60,65

flat top with a very large 14mm inter.

and 70 according to power.

Traditional bifocal lens wearers have therefore had to compromise on their

Also listed in the trifocal range are a

In addition to the standard range,

double D, an executive style and three

Rodenstock produce a wide variety of

concentric items (22x36, 28x42 and

specials under the trade name of

To overcome these disadvantages,

12x36 segments)

‘Manufaktur’, including a number of

Shamir developed a new bifocal lens

appearance as well as on the accompanying visual performance.

In higher indices, Norville has a Tril-

bifocals and trifocals. Brief details are

design – the Duo. An advanced free-

ogy FT28, several polycarbonate bifo-

given here and full specifications can

form lens, this offers surface continuity,

cals and a trifocal, plus some 1.6 index

be obtained from their catalogue.

eliminating the visible line. It also of-

lenses including a 15mm spot seg-

Included in the range are:

fers optical continuity, eliminating the

ment for golfers. In 1.67 there are a

image jump and loss of image.

D seg, C seg and a seamless invisible

Excelit AS 1.5 C40 – a wide (40mm)

design and in the very high 1.76 ma-

segment designed for accomoda-

tain a natural, distortion free visual

terial they have a C seg and another

tive treatment of strabismus.

path as the eye moves from one vision

with seamless segment.

Datalit 1.5 – a CT 40mm segment

zone to another. There is no need to

for computer work etc

compromise either on appearance or

sented with 1.523 index offering

Perfastar – a blended bifocal for

on visual comfort.

round 22, 30, 38 and 45mm segments,

high hyperopes (+8 to +16)

plus a 38mm upcurve and a 30mm

Ardis 1.5 – one piece solid bifocal

as well as improved vision, the Duo of-

prism controlled with segment prism

with different prism powers in dis-

fers other important advantages over

to 6Δ. In the same material there are

tance and near if required, no

flat-top bifocals which limit the type

three flat tops and a C28 curved top.

prism jump.

of lens materials and treatments that

Rounding off the range is a C26 in 1.6

Ardis reverse – an inverted bifocal,

can be used, allowing less versatility

glass.

with small distance segment and

and offering patients fewer choices.

Glass materials are still well repre-

large for near – different prisms are

This enables Shamir’s Duo to main-

In addition to improved appearance

Now, bringing with it all the benefits

Rodenstock

possible for each zone and there is

of free-form lenses, Duo lends itself

www.rodenstock.com

no prism jump

to a variety of materials, tints and

In their ‘standard’ range, Rodenstock

Ardis FZN 1.50 – up and down

coatings.

offer four plastic bifocals - three spher-

curve trifocal – different prism pos-

ical and one aspherical, plus one glass

sible in all three zones

proved appearance, with the elimina-

item. The resin lenses are produced in

Ardis Lenti Concave 1.5 – lenticular

tion of the visible dividing line between

Advantages of the Duo include im-

CR39 and the glass in 1.523 material.

bifocal for high myopes

vision zones; suitability for sunglasses,

The aspheric Cosmolit Bifo C28 is pro-

Ardis NFN 1.5 Tri – trifocal with up

tinted, photochromic and polarised;

duced in a power range of –10 to +8.00

and down curve segments (near,

available in a wide variety of materials

with cyls to +4 and adds 0.75 to 3.00,

far, near)

including high index for thin and aes-

3.50 and 4.00.Diameters range from

Excellent 1.50 – executive style bi-

thetic lenses; suitable for a range of

60 to 75 according to power.

focal

advanced coatings including Shamir

24

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Glacier Plus; ideal also for presbyopes

Younger Optics (Europe)

with progressive lens adaptation diffi-

www.youngeroptics.com

28mm flat top with 7mm inter, adds

culties.

Three trifocals are included – a

Younger have no Rx production and all

1.50 to 4 and a FT35 with 8mm inter

The Duo is available in all resin ma-

the semi-finished are available from

and the same add range. Both are

terials, from CR39 through to 1.74 in

privately owned Rx labs throughout Eu-

made in 80mmm diameter. Finally

clear, photochromic polarised and

rope. In the UK over 100 privately

Younger list a double D trifocal. This

Transitions (including Drivewear).

owned labs are supplied with Younger

has 28mm segments with reading adds

Powers range from –18 to +15, de-

Optics semi-finished lenses from the

1 to 3 and intermediate powers of 60

pending on index and diameters run

facility in Prague, Czech Republic.

per cent of the reading add. Again the

up to 72mm, adds to 4.00 and cyls also

The company uses CR39 and 1.53

to 4. Also listed by Shamir is a standard

Trilogy/Trivex and Transitions VII for a

flat top D28 bifocal in 1.67 material.

range of bifocals and trifocals. All are

Carl Zeiss

lens is made in 80mm diameter.

supplied as semi-finished product. The

www.vision.zeiss.com

Tokai

list includes three round segment

Zeiss list three plas c bifocals, plus a tri-

www.tokai.com

lenses 22, 28 and 40 with adds to 4.00

focal (all in 1.5 CR39) and two glass bifo-

Tokai list two bifocals, both in 1.6 high

and diameters up to 80mm.

cals. There is a C28 bifocal with a power

index resin material, with an Abbé No.

Younger’s R40 is a seamless design

range of -6.00 to +8.00, cyls to 5 and

of 42 and specific gravity of 1.30 g/cm².

and is available with nominal base

adds 1 to 3.5 and 4. Diameters range

These are the 1.60/42 BF and 1.60/42

curves of 2.25, 4.25, 6.25 and 8.25,

from 50 to 75. The next lens is a C25 bi-

GF16 UV.

with adds 0.75 to 4.00.

A power

focal with the very large power range

Their 1.60/42 BF covers a power

range of -5.25 to +8.00 is possible and

of –20.00 to +20.00, cyls to 6 and adds 1

range of –10 .00 to +5.00 with cyls to

the lens is produced with a 75mm

to 3.00 and 3.50. It is produced with di-

+4.00, adds 1.00 to 4.00 in 0.25 steps.

diameter.

ameters of 50 to 65 according to power.

Diameters range from 65/70 to 75/80

Two flat tops are listed – the FT28

Rounding of the CR39 bifocal range is

according to power. The coatings are

and FT35, with adds up to 4 and high

the Aphal. This is a len cular cataract

listed as hard multi + hydrophobic and

adds running from 4.50 right through

lens providing powers of +5.25 to

hard + super hydrophobic. (See dia-

to 8.00, in 0.50 steps. They are listed

+20.00, cyls to 5 and adds 2 to 3 and

gram 1 for physical characteristics of

in 80mm diameter. Also of interest is a

3.50. Diameters up to 65mm.

the segment).

CR39 FT28 slab-off. Adds are 0.75 to

The trifocal, S728 has a 28mm seg-

The 1.60/42 GF16 ranges from -8.00

3.50 in 80mm diameter and prisms can

ment with 7mm inter. Powers are –6.00

to +5.00, again with cyls to +4.00. Adds

be supplied from 1.5 Δ to 6Δ. Two large

to +8.25, cyls to 4 and reading adds 1.75

are 1.50 to 3.50 in 0.25 steps. Diame-

segment CR39 flat tops are included -

to 3.50. It is produced in 70/75mm

ters available are 65 mm to 75 mm

a FT35 with adds to 4 in 76mm diame-

diameter.

according to power. For this lens, the

ter and a very large FT45, adds 0.75 to

coatings are shown as hard multi +

3 and in 80mm diameter.

Two glass bifocals, the CT25 and CT28, complete the range. The 25mm version

hydrophobic and hard multi + super

Rounding off the bifocal range is a

runs from -14.00 to +6.50, cyls to 4 and

water & oil repellent + high scratch

Trivex FT28 with adds 1 to 3.50 and in

adds 1.75 to 4.50. The CT28 has a power

resistant.

76mm diameter.

range of –11.00 to +9.00, cyls to 4.

Barrel aligning plier Western Op cal Supply’s new barrel aligning plier is the perfect tool for rese ng the alignment and spacing to ensure a ght fit between a frame and its temples. For further details visit: www.westernoptical.com

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MEI’s lens edging revolution RacerTBA is the latest lens edging unit to be designed and devel-

through drilling), polishing (flat and bevel edge), square bevel

oped by MEI. It represents a revolu on in lens edging, combining

(T), step back on bevel, groove and chamfer.

the TBA (Throw the Block Away) inspec on process and the edging system in one single unit and its industrial design

A significant reduc on in produc on costs derives from elimina ng the blocks, adhesives and protec ve films used in tradi-

makes it extremely compact and reliable.

onal grinding, as well as integra ng lens quality inspec on into

By combining the indexed rota ng table

the machine. No manual processing or handling is

concept with the experience of MEI in CNC

required.

machines, RacerTBA sets a new standard

The fundamental difference between Rac-

in ophthalmic lens edging, increasing pro-

erTBA and the standard BispheraTBA unit –

duc vity while maintaining the same ac-

in addi on to its increased produc vity–

curacy and consistent precision that are a

lies in the evolu on of the TBA lens orien-

feature of all the company’s products.

ta on system. The version installed carries

The machine performs two opera ons: lens

out full quality inspec on on all lenses (single

loading and inspec on and edging. By using an

vision, progressive, bifocal, gradient nted, po-

indexed rota ng table with four posi ons for

larised, etc.) by means of a new mobile lensmeter

each side, the two opera ons are carried out simultaneously,

integrated into the control process and thickness detec on.

allowing processing of eight lenses at the same me and making

The precision of power checks is 0.03 D for single vision lenses

it the fastest edging machine on the market. The machine can

and 0.05 D for progressives. Preliminary inspec on of lenses to

process about 150 lenses per hour (1,200 lenses/8-hr shi ).

be edged is no longer needed (whether stock or prescrip on

Although designed for large-scale produc on, the lens edging

lenses): once the lenses have been posi oned inside the trays,

side of the RacerTBA unit has six spindles and six tools to guar-

the unit performs all the processes automa cally, producing in-

antee the typical flexible processing found in all MEI units: ver cal

spected and edged lenses.

and inclined bevel, flat edge, grooving, drilling (as well as non-

For further details visit: www.meisystem.com

Lenses for driving Zeiss have launched DriveSafe lenses, specifically designed for those who want to feel safer and more comfortable when driving with their everyday lenses. A er intensive research and wearer trials, the new Luminance Design Technology (LDT) has been developed to give wearers be er vision in low-light condi ons such as twilight, rainfall, gloomy days or at night. Glare can be a risk, reducing the visibility of objects and sensi vity of the eye to contrast. Zeiss DuraVision DriveSafe coa ng par ally reflects these wavelengths and reduces perceived glare by up to 64 per cent compared to premium AR coa ngs. DriveSafe lenses are available in both enhanced single vision and progressive lenses. For further details visit: www.zeiss.co.uk/better-vision

Wooden eyewear Manufactured in Italy, using wood from around the world, MyWoodi eyewear features a clean, linear style that is ultra-modern and extremely cool. Available in six different types of wood and colours, it is composed of eight layers of wood. Sixty processing phases, 15 of which are carried out by hand, yield a featherlight product that weighs in at 13 grams (less than half an ounce). An invisible side hinge completes the whole. For further details visit: www.woodone.it

26

www.optical-world.co.uk


Automatic lens tinting machine

New from Phantom Research Labs is a state-of-the-art, microcomputer controlled, automa c lens n ng machine with dual digital me displays to show the n ng cycle set me, and also the remaining cycle me. Developed for both solid and gradient n ng with absolutely no lines, the free-standing machine, takes only a ma er of seconds to set up, is easy to use, and features virtually silent opera on. The versa le arm can rotate 360 degrees, and can accommodate up to four pairs of lenses at one me. The machine features con nuous agita on of the dye solu on and oers a 30 second to 60 minute mer with dual digital me. For further details visit: www.phantomresearch.com

Digital super tinter The Op Safe digital super nter XD900 is a single quart tank hea ng system combining accurate PID temperature control, variable s rring ac on, split lid, and non-s ck tank (vat) for hea ng lens n ng solu ons. A detachable temperature probe is immersed into the nt solu on to reflect solu on temperature, not the temperature of the HTF as in conven onal hea ng systems. The unit requires only 15 fl. oz. (443 ml) of HTF. The HTF is a water soluble, environmentally safe, non-hazardous, biodegradable oil blend. Mul ple units can be combined to create a modular, in-line system. For further details visit: www.phantomresearch.com

Sunglasses from the Orient The new Coco Song sunglasses collec on, the Area98 range, is a

delicate feather is glimpsed floa ng gently onto the surface of

celebra on of the elegant woman.

the temples.

Inspired by the opulence of ancient empires, the collec on is

An interplay of contras ng colours highlights the personality

composed of four models made en rely

of the Nights Lights model, a wide, square shape with smoky

by hand and displaying the iconic ele-

lenses that echo the frame front tone. A metal inlay deco-

ments typical of the brand. Amidst a whirl

rated in the oriental style and a light feather detail on

of sophis cated silk inlays, exquisite de-

the temples completes this frame.

tails, rare materials and semi-precious

Rose Room, too, displays beau-

stones, the wearer of these sunglasses re-

ful ornamenta on: the cat-eye

discovers the delight of travelling to worlds distant in me and space. Colours are clear and bold, o en

Bobo Cool model, from CoCo Song sunglasses collection

unique, giving frame fronts a bold look. Temple decora ons are given greater prominence. A stylised phoenix delicately alights on the bu erfly frame front of the Bobo Cool model, featuring gradient lenses, while a

frame front features elegant decora ons and the black gradient lenses are the perfect foil for the frame’s vibrant colour. An enamelled-metal fret pa ern flows over the rim tops and temples of A er Hours. The frame has a refined, feminine touch of colour. For further details visit: www.area98.it

Blue-violet light blockers Zeiss con nue to enhance their high quality treatments and coa ngs por olio, with the introduc on of DuraVision BlueProtect. The comprehensive coa ngs por olio provides blue-violet light blocking solu ons for both indoor and outdoor ac vi es, with DuraVision BlueProtect being the perfect solu on for indoor ac vi es. For further details visit: www.zeiss.co.uk/better-vision

28

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    2 5 > 2 8 S E P T. 2 0 1 5 PARIS NORD VILLEPINTE


AtoZ of OPTICAL websites All the companies listed in our A to Z guide are featured on our own Website along with a Hyperlink. Log onto www.optical-world.co.uk and select the company you are looking for, then simply click on their URL which is highlighted and you’ll be automatically re-directed. Remember to bookmark the Optical World Website so you can easily locate it for future use. If your company’s Website is not shown below, contact us immediately, via our email address info@optical-world.co.uk – The annual cost of an entry in this guide is £90 (£180 with logo)

www.agp-abrasifs.com

www.optrafair.co.uk

Federation of Manufacturing Opticians www.fmo.co.uk

w.

AIM Specialty Materials www.aimspecialty.com

OptoTech www.optotech.de

Fil-Tech Inc www.filtech.com

Arch Crown www.archcrown.com

Automation & Robotics www.ar.b

Bühler Alzenau GmbH Business Area Leybold Optics www.buhlergroup.com

Groupe Couget Optical www.groupecouget.com

www.pads4labs.com

PBG Piezoelettrica Business General Srl www.pbg.it

Hong Kong Optical Fair www.hkopticalfair.com

Phantom Research Labs Inc www.phantomresearch.com

www.isucl.co.kr

POMDI-Herramientas De Diamante S.A. www.pomdi.com

www.kepets.com

ww

Cerium Optical Products www.ceriumoptical.com

Comes Fratelli Colombo S.r.l. www.comes.it

www.satisloh.com

www.laser2000ophthalmic.com

Schneider GmbH & Co. KG www.schneider-om.com

Comexpo – Silmo www.silmoparis.com

www.laserop.com

Contact Lens Manufacturers Association www.clma.net

www.scl-intl.com

www.ml-oc.com

SEIKO Optical UK www.seiko-optical.co.uk

www.contamac.com

www.mido.it – www.mido.com

COTEC Gmbh www.cotec-gmbh.com

www.tecofrance.com

Norville Autoflow www.norville.co.uk

Reed Exhibition Companies www.reedexpo.com

OLA (Optical Laboratories Association) www.ola-labs.org

Fair & Cheer Inc www.fnc.com.tw

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Omega L.E.D. Ltd “driven with integrity & excellence”

www.omegaled.co.uk

Wenzhou Int’l Optics Fair, China www.donnor.com


The International Suppliers Guide Circulates to over 11,500 readers in more than 100 countires www.optical-world.co.uk

IS YOUR COMPANY FEATURED HERE Telephone: (44) 1702 345443 Email: info@optical-world.co.uk W

August 2015

31


The International Suppliers Guide Circulates to over 11,500 readers in more than 100 countires www.optical-world.co.uk

32

www.optical-world.co.uk


The International Suppliers Guide Circulates to over 11,500 readers in more than 100 countires www.optical-world.co.uk

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August 2015

33


The International Suppliers Guide Circulates to over 11,500 readers in more than 100 countires www.optical-world.co.uk

34

www.optical-world.co.uk


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August 2015

35


2015 EXHIBITION DIARY 9-11 September

28th China International Optics Fair China International Exhibition Centre Beijing, PR China

17-19 September

International Vision Expo West Sands Expo Centre, Las Vegas, USA

25-28 September

SILMO 2015 Parc des Expositions, Villepinte, Paris, France

6-8 October

IOFT 2015 28th International Optical Fair, Tokyo, Japan

4-6 November

Hong Kong Optical Fair Hong Kong Convention and Exhibition Centre

7-9 December

VISION-X Dubai 16th Optical and Ophthalmic Exhibition and Conference, Dubai World Trade Centre, United Arab Emirates

IS YOUR COMPANY FEATURED HERE Telephone: (44) 1702 345443 Email: info@optical-world.co.uk

FORTHCOMING FEATURES SEPTEMBER ISSUE Special SILMO Edition OPTICAL WORLD will once again be publishing a major preview of the show. Exhibitors are invited to send details of the products they will have on display to: Email: info@optical-world.co.uk

OCTOBER ISSUE Survey: Lens meters and other measuring equipment If you wish your company to be included in the above survey please send relevant information to our technical editor Tony Jarratt Mr A. JARRATT ‘Dornie’ Carpenters Wood Drive (Opposite No. 53) Chorleywood, Herts WD3 5RW, UK Email: tjarratt@techcons.co.uk 36

www.optical-world.co.uk


Spotlight on Asia www.diops.co.kr www.easypower .com.hk

cal.com

www.darwinopti

www.nidek.co.jp

www.gialens.com .tw

www.fnc.com.tw

www.toplens.cn

Hong Kong O Manufacturers A ptical ssociation

www.isucl.co.kr

www.hkoptical.o

rg.hk

www.sinjindia.com

s.com www.thintechlen

www.siof.cn ww w.ciof.cn


Optical World August 2015