基于模型眼复曲面IOL纵向色差的评价  

Optical performance of the toric intraocular lens based on a schematic eye

作　　者：杨欣[1] 刘丹岩[1] 张斌[1] 杜颖华[1] 郭从容[1] 崔月先[1] 

机构地区：[1]河北医科大学第二医院眼科,石家庄050000

出　　处：《中华眼视光学与视觉科学杂志》2015年第5期288-291,共4页Chinese Journal Of Optometry Ophthalmology And Visual Science

基　　金：河北省医学科学研究重点课题（ZL20140005）

摘　　要：目的 评价复色光环境下球面、非球面、toric IOL的纵向色差.方法 实验研究.在Zemax光学设计软件中建立Hwey-Lan Liou模型眼,使用光线追迹法计算SN60AT IOL、YA60BB IOL、Tecnis ZA9003 IOL和3种型号toric IOL的纵向色差.使用Originpro 7.5（美国OriginLab公司）制图软件绘图.结果 复色强光环境下SN60AT IOL的纵向色差是2.35 D,YA60BB IOL是2.06 D,Tecnis ZA9003 IOL是1.57 D.3种型号toric IOL的纵向色差是2.34 D,材料色散系数小的IOL有较小的纵向色差;球面SN60AT和T3、T4、T5 toric IOL有相同的纵向色差;暗光环境的纵向色差大于强光环境.结论 Abbe数越大,IOL的纵向色差越小.低散光度的toric IOL与球面IOL有相同的纵向色差.Objective To evaluate the longitudinal chromatic aberrations （LCAs） of spherical,aspherical and toric intraocular lenses （IOLs） under polychromatic light based on a schematic eye.Methods Using Zemax software,a Hwey-Lan Liou schematic eye was set up and the LCAs of the Tecnis ZA9003 IOL,YA60BB IOL,SN60AT IOL and toric IOL were evaluated by the ray tracing method.Results The LCAs were 2.34 D for the toric IOL,2.35 D for the SN60AT IOL,1.57 D for the Tecnis ZA9003 IOL and 2.06 D for the YA60BB IOL.The higher Abbe number of the IOL means a lower LCA;SN60AT and T3,T4,T5 toric IOLs displayed the same LCAs.The LCA was larger for short wavelengths compared to long wavelengths.Conclusion The higher the Abbe number is,the smaller the LCA of the IOL.The LCA is the same for lower astigmatism toric IOLs and spherical IOLs.

关 键 词：人工晶状体 散光 角膜 模型眼 

分 类 号：R772.2[医药卫生—眼科]