Anne_Sulley_-_Latest_learnings_Astigmatism

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10/11/2012

Astigmatism and its prevalence

Astigmatism ‐ prevalence, insights & opportunities

Spherical or </=0.50DC

November 2012 24% 53% 23%

Anna Sulley BSc (Hons) MCOptom FBCLA FAAO Medical Affairs Associate Director EMA

>/=0.75DC in one eye only >/= 0.75DC in both eyes (N=11,624)

Young G, Sulley A and Hunt C. Prevalence of Astigmatism in Relation to Soft Contact Lens Fitting. Eye & Contact Lens 2011; 37 (1): 20‐25

Prevalence eyes with various levels astigmatism 30%

Prevalence astigmatism increases with age 30%

Hyperopes Myopes

25%

0.50DC or less >/= 0.75DC at least one eye

25%

All 31.7% myopes >0.75DC

15% 15.7% hyperopes >0.75DC

10% 5%

15%

10%

5%

0% 0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50 >2.50 Cylinder (D)

Young G, Sulley A and Hunt C. Prevalence of Astigmatism in Relation to Soft Contact Lens Fitting. Eye & Contact Lens 2011; 37 (1): 20‐25

50 45 40 35 30 25 20 15 10 5 0

0% 8‐19

20‐29

30‐39

40‐49

50‐59

60‐70

Age range (Years) Young G, Sulley A and Hunt C. Prevalence of Astigmatism in Relation to Soft Contact Lens Fitting. Eye & Contact Lens 2011; 37 (1): 20‐25

Prevalence Astigmatism vs. Fits Data

Percentage (%)

20%

Prevalence

Prevalence

20%

Although toric soft CL prescribing increasing ‐ not to levels expected if all astigmats fully corrected

Astigmatic Drop Outs A high percentage of CL drop‐ outs are astigmats 65% of drop‐outs: ≥ 0.75DC in one eye

47 20

Prevalence Toric fits UK ‐ Industry astigmatism (≥0.75D data 2 at least 1 eye) 1

19

Norway 3

Young, Veys, Pritchard & Coleman Ophthal Phsiol Opt 2002; 22: 516‐52

• Astigmats over represented among CL drop‐outs • Poor vision due to uncorrected cylinder contributing factor in CL discontinuation

1. Young G, Sulley A & Hunt C. Prevalence of Astigmatism in Relation to Soft Contact Lens Fitting; Eye & CL, 2011: 37: 20‐25 2. GfK Fit Audit FY 2011 3. 19.4% CL wearers use torics – Internal data, 2012

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