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基于人工晶体眼模型的高阶像差对视觉质量的影响

发表时间:2009-08-15  浏览量:1458  下载量:488
全部作者: 饶丰,王肇圻,王雁,赵堪兴,左彤
作者单位: 南开大学现代光学研究所;天津眼科医院屈光手术中心
摘 要: 根据实际测量的角膜地形图数据和眼内各组分的厚度,运用ZEMAX光学设计软件,设计了球柱人工晶体(intraocular lens, IOL),构建了个性化人工晶体眼模型。并运用该模型,分析了不同高阶像差的人工晶体眼在不同物距下的视觉质量。研究表明:白内障术后人眼高阶像差的存在虽然降低了人眼在最佳物面的视觉质量,但是改善了远物面和近物面的视觉质量,使得人眼在较大物距范围内视觉质量适中。因此,适量的高阶像差不一定需要矫正,它对人工晶体眼有一定的积极意义。
关 键 词: 应用光学;视觉质量;个性化人工晶体眼模型;调制传递函数
Title: Effect of higher order aberrations on visual quality based on individual pseudophakic eye model
Author: RAO Feng, WANG Zhaoqi, WANG Yan, ZHAO Kanxing, ZUO Tong
Organization: Institute of Modern Optics, Nankai University;Refractive Surgery Center, Tianjin Eye Hospital
Abstract: Based on the measured corneal topography data and the eye�s axial lengths, Spherocylindrical intraocular lens (IOL) is designed with optical design software ZEMAX, and then the individual pseudophakic eye model is constructed. The visual quality at different object distance is analyzed with the established model. It is shown that higher order aberrations deteriorate the visual performance at the designed object distance, but they improve the visual performance at the other object distance. This improvement might provide moderate visual acuity over a large range of object distance. Therefore, specific higher order aberrations may not be corrected in clinic.
Key words: applied optics; visual optics; individual pseudophakic eye model; modulation transfer function
发表期数: 2009年8月第15期
引用格式: 饶丰,王肇圻,王雁,等. 基于人工晶体眼模型的高阶像差对视觉质量的影响[J]. 中国科技论文在线精品论文,2009,2(15):1541-1544.
 
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