Epi-LASIK術(shù)后高階像差和視覺質(zhì)量的臨床分析

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1、天津醫(yī)科大學(xué)碩士研究生學(xué)位論文階像差RMS值(S4)與各對比度視力的相關(guān)性隨對比度的降低而增加，與5％對比度視力的相關(guān)具有統(tǒng)計(jì)學(xué)意義(r=0．364，P=0．034)。其他各階RMS值與各對比度視力的關(guān)聯(lián)均無統(tǒng)計(jì)學(xué)意義(尸

2、提示低對比度視力是一檢測屈光術(shù)后視功能較敏感的指標(biāo)。3．術(shù)前，眩光狀態(tài)時(shí)極低對比度下的視力明顯低于無眩光狀態(tài)，術(shù)后，有無眩光狀態(tài)時(shí)各對比度下的視力差異均無統(tǒng)計(jì)學(xué)意義。提示角膜表層切削術(shù)后患者視覺質(zhì)量受眩光影響較小。4．Epi．LASIK手術(shù)后，球差和球樣像差(54)可明顯降低低對比度下的視力。提示行波前像差引導(dǎo)的個(gè)體化Epi．LASIK手術(shù)時(shí)盡可能減少球差的產(chǎn)生，將會帶來較好的視覺質(zhì)量。關(guān)鍵詞：機(jī)械法準(zhǔn)分子激光上皮瓣下角膜磨鑲術(shù)；準(zhǔn)分子激光原位角膜磨鑲術(shù)；高階像差；近視：對比度視力：眩光IIl天津醫(yī)科大學(xué)碩士研究生學(xué)位論文AbstractObjective：To

3、investigatechangesinocularhigherorderaberrationsandcontrastvisualacuity,andanalyzethecorrelationshipbetweenhigh-orderaberrationanddifferentcontrastvisualacuityinmyopiaafterepipolislaserinkeratomileusis．AndhopingtheresearchCanprovidemoreinstructionsforrefractivesurgeonstochoosemoreapp

4、ropriateoperation．Methods：Aprospectivestudy．Sectionlincluded34moderatemyopiapatients．31eyesof17patientshadEpi—LASIKand30eyesof17patients，LASIK．Bestcorrectedvisualacuity,uncorrectedvisualacuity,manifestrefractionandwavefrontaberrationsweremeasuredandanalyzedpreoperativelyand4-6monthsa

5、ftersurgery．Section2included35eyesof35subjects．ThepreoperativesphererefractionWas一3．00～一6．00D．a(chǎn)ndthecyclinderrefractionwasO～一1．50D．Ocularhigher-orderaberrationwasmeasuredundermesopicconditionusingtheHartman-shackwavefrontanalyzer,high(1oo％)，moderate(25％)，lowcontrast(10％)andverylowcon

6、trast(5％)visualacuitywithandwithoutglareweremeasuredusingMulti—FunctionVisualAcuityTesterunderthesameconditionpreoperativelyand4monthsaftersurgery．Results：’。1．ThereWasnostatisticallysignificantdifferenceforhigherorderaberrationsbetweenEpi—LASIKgroupandLASIKgrouppostoperativelyregardl

7、essofthepupilsize．2．Fora6-mmpupil，themeanchangesinRMSforthe5thorder(S5)andthe6thorder(86)weresignificantlysmallerinEpi-LASIKgroupthaninLASIKgroup(戶一2．055，。2．049；p-=0．044，O．001，respectively)，andS5were0．026士0．036¨mand0．046士0．042“m，S6were0．020士0．019p,mand0．041士0．027pm．Secondsphericalabe

8、rration(co)w