| 朱海丰,张另坦,方志良.基于不同人眼模型的非球面人工晶体光学性能研究[J].光电子激光,2014,(9):1843~1848 |
| 基于不同人眼模型的非球面人工晶体光学性能研究 |
| Study of optical performance of the aspherical intra-ocular lenses based on different eye models |
| 投稿时间：2014-04-13 |
| DOI： |
| 中文关键词: 非球面人工晶体 球差 人眼模型 成像质量 光学性能 |
| 英文关键词:aspherical intra-ocular lens (IOL) spherical aberration eye model imaging qu ality optical performance |
| 基金项目:中央高校基本科研业务费专项资金(12CX04087A)和青岛市科技创新(12-1-4-7-(7)-jch )资助项目 (1.中国石油大学(华东) 理学院,山东 青岛 266555； 2.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,天津 300071) |
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| 中文摘要: |
| 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。 |
| 英文摘要: |
| To improve the imaging quality of eyes implanted with intra-ocular lens (IOL),t he biconvex IOL with aspherical anterior surface is designed based on the idea of making up spherical aberration of cornea which is calculated by multigroup eyes as the off set-value.The imaging qualities of different model eyes implanted into the aspherical IOLs ar e analyzed with ray-tracing method using Zemax optical design software.The imaging qualities a re characterized with the modulation transfer function (MTF) and contrast sensitivity function (C SF).The results show that the MTF and CSF of eyes with aspherical IOL designed by us are better than those with spherical IOL.Furthermore,compared with the LI61U,Tecnis Z9000and SofPort A O with diopter 22D used in clinic as they are implanted into the Liou model eye, the aspherical IOL designed by us is better and shows relative outstanding optical perf ormance. |
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