光电工程, 2009, 36 (4): 56, 网络出版: 2009-10-09
非球面人工晶体设计及其光学性能研究
Design Method and Optical Performance of Aspherical IOL
摘要
提出了非球面人工晶体的设计思路及方法，即根据个体人眼的角膜地形图，将其转换为波前图，获得Zernike系数Z40 (球差)项，在该球差值基础上设计并得到非球面人工晶体结构参数。对植入9.5D 和20.5D 人工晶体的两实际患眼成像质量的模拟分析表明：以本文方法设计的非球面人工晶体在对人眼系统的MTF，对比敏感度及离焦MTF 的改善上都明显优于传统的球面人工晶体，光学性能良好。本文为非球面人工晶体的设计提供了切实可行的方法，并为其在临床上应用提供了一定的理论基础。
Abstract
The idea and method for designing aspherical Intraocular Lens (IOL) were proposed. First, the wavefrontaberration was calculated according to the corneal topography, and then, based on the wavefront aberration expressed asZernike polynomial Z40, the aspherical IOL was designed. The imaging quality of two practicable eyes implanted with aspherical and spherical IOLs of power 9.5D and 20.5D was analyzed. The results show the Modulation Transfer Function (MTF), contrast sensitivity and defocusing MTF of eye implanted with aspherical IOL are better than those with spherical IOL. The aspherical IOL displays more excellent optical performance than traditional spherical IOL, and the method is feasible to design aspherical IOL. The results provide theoretical bases for the clinical application of aspherical IOL.
朱海丰, 贾翠萍, 方志良. 非球面人工晶体设计及其光学性能研究[J]. 光电工程, 2009, 36(4): 56. ZHU Hai-feng, JIA Cui-ping, FANG Zhi-liang. Design Method and Optical Performance of Aspherical IOL[J]. Opto-Electronic Engineering, 2009, 36(4): 56.
PDF全文
