Comparison of higher order aberrations and modulation transfer function with different intraocular lens to normal young phakic eyes

Abstract

Objective To compare higher order aberrations (HOAs) and modulation transfer function (MTF) with postoperative cataract phacoemulsification and intraocular lens implantation with different IOLs to normal younger phakic eyes.Methods Base on spherical aberration of IOLs,the 80 cases (98 eyes) were divided into three groups:group Ⅰ spherical IOLs HQ201HEP,group Ⅱ aspheric IOL with zero aberration Akreos AO and group Ⅲ aspheric IOLs with negative aberration Tecnis ZA9003.Normal young phakic eyes were group ⅣV.Compute higher order aberrations and modulation transfer function of the patients of 3-month follow-up after cataract surgery and normal younger phakic eyes.Results Spherical aberration of four groups had statistically significant differences (P ＜0.05),except group Ⅲ and group ⅣV.The difference of coma between intraocular lens and normal young phakic eyes was statistically significant (P ＜0.05) while the differences between the different intraocular lens were no statistically significant (P ＞0.05).Total HOAs of four groups had statistically significant differences (P ＜0.05),except group Ⅰ and group Ⅱ.MTF(HOA) of eyes with intraocular lens was lower than normal young phakic eyes and the difference was statistically significant (P＜ 0.0083).MTF(HOA) of the three groups with different intraocular lens also had statistically significant differences (P ＜0.0083).Conclusions Aspheric IOLs can significantly reduce the spherical aberration and improve postoperative visual quality of the patients,especially the aspheric IOLs with negative sPherical aberration.However,there are differences between aspheric IOLs and normal young phakic eyes. Key words: Intraocular lens; Aberration; Modulation transfer function