标准与波前像差引导lasik术后视觉质量的对比.研究

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1、第二军医大学硕士学位论文pre。operationat6．3deg、4．0deg、2．5deg、1．6deg．Underphotopiccircumstancewithnoglare，thecontrastsensitivityhasnotyetrecoveredtopre．operativelevelatmostspatialfrequency．Theglarecausedasignificantlydecreaseincontrastsensitivityunderphotopiccircumstance．Post—operativemesopiccontrastsensit

2、ivityinwavefront．guidedLASIKgroupWasbetterthanthatinstandardLASIKgroup，howeveronlyundertheconditionwithaglare，itshowedastatisticallysignificantdifferencebetweentwogroups．Theglarecausedanincreaseincontrastsensitivityinwavefront—guidedLASIKgroup(thestatisticallydifferenceCanbefoundonlywhentheLo

3、gContrastsensitivityWas0．3)，whereasinstandardLASIKgroup，itcausedadecrease(althoughnostatisticallysignificantdifferencewasfound)．Ithasshownanincreaseinocularhigher-orderaberrations，especiallycomalikeaberrationandspherical—likeaberration．ThechangeofHOAROM，Z6，Z7andZ8inwavefrom—guidedLASIKgroupar

4、elessthanthatinstandardLASIKgroup．ItisrevealedthatHOAROM，Z8，Z9andZ12weresignificantlyassociated谢ththechangeofphotopiccontrastsensitivity．Withwavefrontvariancesincreased．thecontrastsensitivitydecreased．Conclusions：Wavefront-guidedLASIKrecoveredbetterthanthatofstandardLASIKgroupincontrastsensit

5、ivityandithelppatientsgetbettervisualqualitythanthatofstandardLASIK．Butitslongefficacyneedsmorecases，moreevaluationindexandlongertimefollow-uptoprove．Keywords：LASIK，wavefront—guided，contrastsensitivity,higher-orderaberration,photopiccircumstance，mesopiccircumstance一4一主要英文缩写词表VAvisualacuityBCV

6、AbestcorrectedvisualacuityUCVAuncorrectedvisualacuityMRSE视力最佳矫正视力裸眼视力meanrefractivesphericalequivalent等值球镜LASIKlaserinsirekeratomileusisCScontrastsensitivity准分子激光角膜原位磨镶术对比敏感度CSFcontrastsensitivityfunction对比敏感度函数HOAROMhighorderaberrationsrootmeansquar高阶像差均方根RMSrootmeansquare均方根独创性声明本人声明所呈交的学位论

7、文是我个人在导师指导下进行的研究工作。除了文中特别加以标注和致谢的地方外，论文中不包含其他人已经发表或撰写过的研究成果。与我一同工作的同志对本研究所做的任何贡献均已在论文中作了明确的说明并表示谢意。本人承担本声明的法律责任。学位论文作者签名：签字日期：动／。年)、月学位论文使用授权书声明本人完全了解第二军医大学有关保留、使用学位论文的规定，有权保留并向国家有关部门或机构送交论文的复印件和磁盘，允许论文被查阅和借阅。本人授权第二军医大学可以将学位论文的全部或部分内容编入有关数据库进