Tomlinson A, Hemenger R P, Garriott R
Department of Optometry and Vision Science, Glasgow Caledonian University, Scotland, United Kingdom.
Invest Ophthalmol Vis Sci. 1993 Mar;34(3):621-9.
The authors describe a method for estimating the spheric aberration (SA) of the human crystalline lens in vivo.
This method was based on a comparison of the measured change in contrast sensitivity (delta log (CSF)) of the eye and the calculated change in modulation transfer function of the cornea with undilated and dilated pupils. The method assumes that the total change in visual efficiency (delta log (CSF)) in these two states is caused entirely by the SA of the eye combined with the Stiles-Crawford effect.
Data are reported for 20 subjects (age range, 20-56 yr). SA for the whole eye was found to be positive and in the range 0-0.83 D (0-0.80 D using Stiles-Crawford apodization). The SA of the crystalline lens was generally negative and in the range 0 to -0.81 D (0 to -0.78 D using apodization).
The method gives results consistent with previous reports in the literature. Despite potential limitations, the technique offers a new method for estimating the SA of the human crystalline lens in vivo.
作者描述了一种在体估计人晶状体球差（SA）的方法。
该方法基于比较眼睛对比度敏感度的测量变化（δlog(CSF)）与计算得出的角膜调制传递函数在瞳孔未散瞳和散瞳状态下的变化。该方法假设这两种状态下视觉效率的总变化（δlog(CSF)）完全由眼睛的球差与斯泰尔斯 - 克劳福德效应共同引起。
报告了20名受试者（年龄范围20 - 56岁）的数据。发现全眼球差为正值，范围在0 - 0.83 D（使用斯泰尔斯 - 克劳福德切趾法为0 - 0.80 D）。晶状体的球差通常为负值，范围在0至 - 0.81 D（使用切趾法为0至 - 0.78 D）。
该方法得出的结果与文献中先前的报道一致。尽管存在潜在局限性，但该技术为在体估计人晶状体球差提供了一种新方法。
