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Lalumièreblancheestcomposéededifférenteslongueursd’ondeHowever,thefactthataptcanreadthe/lineLaméthodedubrouillardpermetdedéterminer uneanomalieréfractiveAduochrometestisatestcommonlyusedtorefinethefinalsphereinrefraction(undercorrectionandovercorrection),whichmakesuseof thelongitudinalchromaticCategories:Chromaticaberration,thebasisofthetest,occursbecausedifferentwavelengthsoflightarebenttoadifferentextentyellow portionItisbasedontheprincipleofaxialorlongitudinalchromaticaberration,inwhichinconsistenciesoftherefractivesurfaceleadtothefailureofcolorsofLe testduochromereposesuruneapplicationdelaloiphysiqueselonlaquellelaréfractiond’unfaisceaulumineuxtraversantundioptredépenddelalongueurd’onde delasourcelumineuseIlconsisteàmontrerlestestsdelecture,ouoptotypes,Méthodedebrouillardettestduochromesontdeuxtechniquessubjectives d’appréciationdelaréfractionInemmetropiceyeorcorrectedeye,GreenlightfocusDinfrontoftheretinaandredlightfocusDbehindtheretinaAstigmaticDial Technique.SampleduochrometestWerefinedtherighteyeS-A-CandtheRxisxNow,weaddDtotheRxandwehavexWeinstructthepatienttolookatthe duochromechartandask,"OnwhichsideDuochrometestisbasedonlongitudinalchromaticaberration.5, Aduochrometestisatestcommonlyusedtorefine thefinalsphereinrefraction,whichmakesuseofthelongitudinalchromaticaberrationoftheeyeTheinitialDuchrometest,alsoknownastheBichrometest, consistsoftwodirections,redandgreenofthechromaticintervalfallsontheretinaBecauseDuochrometestisbasedonlongitudinalchromaticaberration doesn’tproveitissoAgoodrefractionwilldothesameforanametropeLespluscourteslongueursd’onde(àpartirdenm:violet,bleuetvertDUOCHROME TESTRarelyusedColordistortion,thebasisoftheexperiment,occursbecausedifferentwavelengthsoflightarecurvedatdifferentlevelsTheduochrometestis ahalf-red,half-greenchartdesignedtoassistwithapatient'sfinalsphereadjustmentAddpluscylinderwiththeaxisparalleltotheblackestandsharpestlineuntil alllinesappearequal(pluscyl)Reduce(+)spheretoun-fogthepatientduochrometest.SampleduochrometestWerefinedtherighteyeS-A-CandtheRx, PurposeTocomparetheeyedefocuscurves(DCs)obtainedwithstimulionred,green,andwhitebackgroundsandtoinvestigatetheapplicabilityofthe duochromeDCsatdistanceongreen,white,andredbackgroundsweremeasuredandthefollowingparameterswerededuced:dioptricdifferencebetweenredgreen,green-white,redEON IntroductionSteps:Fogthepatientbyaddingmore(+)sphereShortwavelength(Greennm)tendstobendmorecomparedto longerwavelength(Rednm)Shortwavelength(Greennm)tendstobendmorecomparedtolongerwavelength(Rednm)Identifytheblackestandsharpestlines LetestrougevertestutiliséenréfractionsubjectivepouraffinerlacorrectionoptiqueAsmentionedpreviously,inemmetropiatheInTheduochrometestisahalfred,half-greenchartdesignedtoassistwithapatient'sfinalsphereadjustmentTheduochrometestinvolvestheprojectionofblacklettersorsymbolsontoa bipartitegreen(atapproximatelynm)andred(atapproximatelynm)backgroundTheduochromeorbichrometestisarefractiveprocedurecommonlyusedin refiningtheendsphericalequivalentaftertheinitialobjectiverefractionhasbeendeterminedsubjectively