文献类型：期刊文献

英文题名：Effects of higher-order aberrations on contrast sensitivity in normal eyes of a large myopic population

作者：Zhao, Peng-Fei[1];Li, Shi-Ming[1];Lu, Jing[2];Song, Hong-Min[3];Zhang, Jing[1];Zhou, Yue-Hua[1];Wang, Ning-Li[1]

第一作者：Zhao, Peng-Fei

通讯作者：Zhou, YH[1]

机构：[1]Capital Med Univ, Beijing Tongren Hosp, Ophthalm Ctr, Beijing Ophthalmol & Visual Sci Key Lab, Beijing 100730, Peoples R China;[2]Hebei Med Univ, Dept Ophthalmol, Affiliated Hosp, Baoding 100730, Hebei, Peoples R China;[3]Beijing Union Univ, Coll Appl Arts & Sci, Beijing 100191, Peoples R China

第一机构：Capital Med Univ, Beijing Tongren Hosp, Ophthalm Ctr, Beijing Ophthalmol & Visual Sci Key Lab, Beijing 100730, Peoples R China

通讯机构：[1]corresponding author), Capital Med Univ, Beijing Tongren Hosp, Ophthalm Ctr, Beijing Ophthalmol & Visual Sci Key Lab, Beijing 100730, Peoples R China.

年份：2017

卷号：10

期号：9

起止页码：1407-1411

外文期刊名：INTERNATIONAL JOURNAL OF OPHTHALMOLOGY

收录：;Scopus(收录号：2-s2.0-85029174063);WOS:【SCI-EXPANDED(收录号:WOS:000409558000013)】；

语种：英文

外文关键词：myopia; contrast sensitivity; higher-order aberrations; coma; spherical aberration

摘要：AIM: To study the relation between higher-order aberrations (HOAs) and contrast sensitivity (CS) in normal eyes among a population of laser in situ keratomileusis (LASIK) candidates. METHODS: In 6629 eyes of 3315 LASIK candidates, CS were measured under dark environment at the spatial frequencies of 1.5, 3, 6, 12 and 18 cycles per degree (c/d), respectively, using an Optec 6500 visual function tester. Meanwhile, ocular HOAs were measured for a 6.0 mm pupil with a Hartmann-Shack wavefront analyzer. RESULTS: In the study, the subjects with an average spherical equivalent of -4.86 +/- 2.07 D were included. HOAs decreased from the third to the sixth order aberrations with predominant aberrations of third-order coma, trefoil and fourth-order spherical aberration. At low and moderate spatial frequencies, CS was negatively correlated with the third-order coma and trefoil aberrations, and decreased with increasing Z(3)(1), but increased with increasing Z(3)(-3) and Z(5)(-1). At high spatial frequencies, CS decreased with increasing Z(3)(-3) and increased with increasing Z(5)(-1). CONCLUSION: At a large pupil size of 6.0 mm, the third-order aberrations, but not the total aberrations, are the main factors affecting CS. Vertical coma is negatively correlated with CS.