基于不同人眼模型的非球面人工晶体光学性能研究

发布时间：2018-03-18 23:33

本文选题：非球面人工晶体　切入点：球差　出处：《光电子.激光》2014年09期 　论文类型：期刊论文

【摘要】：为改善人工晶体植入眼成像质量,以多组角膜球差平均值为需补偿值,设计了前表面为非球面的双凸型非球面人工晶体。通过Zemax光学设计软件实现光线追迹的方法,基于不同人眼模型,将所设计非球面人工晶体植入,对相应眼光学系统的的成像质量进行分析,成像质量以假晶体眼光学系统的调制传递函数(MTF)和对比敏感度函数(CSF)表征。结果表明,植入本文设计的非球面人工晶体各模型眼的MTF曲线和CSF曲线均高于植入球面人工晶体;与目前临床上实际应用的LI61U型、Tecnis Z9000型和SofPort AO型3种人工晶体性能进行了对比分析,模拟分析模型为Liou眼系统,植入晶体屈光度为22D的结果表明,植入本文设计的非球面人工晶体眼光学系统的MTF和CFS曲线均高于植入其他3种晶体眼光学系统,所设计的非球面人工晶体表现出了相对优异的光学性能。
[Abstract]:In order to improve the imaging quality of intraocular lens implantation, a double convex aspheric intraocular lens with aspherical front surface was designed with the average value of corneal spherical aberration as compensation value. The method of ray tracing was realized by Zemax optical design software. Based on different human eye models, the designed aspherical intraocular lens was implanted and the imaging quality of the corresponding optical system was analyzed. The imaging quality was characterized by the modulation transfer function (MTF) and contrast sensitivity function (CSF) of the optical system of pseudocelluar eyes. The results showed that the MTF curves and CSF curves of the model eyes implanted with aspherical intraocular lens were higher than those of the implanted spherical IOLs. Compared with the three kinds of intraocular lens of LI61U type Z9000 and SofPort AO, which are used in clinical practice at present, the simulation model is Liou eye system and the refraction of implanted lens is 22D. The MTF and CFS curves of the aspherical intraocular lens system designed in this paper are higher than those of the other three kinds of optical systems. The designed aspheric intraocular lens exhibits relatively excellent optical properties.
【作者单位】：中国石油大学(华东)理学院;南开大学现代光学研究所光电信息技术教育部重点实验室;
【基金】：中央高校基本科研业务费专项资金(12CX04087A) 青岛市科技创新(12-1-4-7-(7)-jch)资助项目
【分类号】：R779.6

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