Study on chromatic aberration in a population of Chinese myopic eyes by means of optical design

Yuanqing He,Lin Zhang,Yan Wang,Shaolin Zheng,Chao Fang,Yongji Liu,Lu Wang,Shengjiang Chang,Zhaoqi Wang

doi:10.1364/boe.4.000667

Abstract

Two kinds of individual eye models, involving and without involving the angle between visual axis and optical axis, are established by means of optical design. We use them to study the properties of the transverse chromatic aberration (TCA) and longitudinal chromatic aberration (LCA) over the visible spectrum. Then the effects of the LCA and TCA on the visual quality of human eyes are evaluated. The statistical averages of TCA and LCA over the visible spectrum for Chinese myopic eyes are obtained. Results show that both TCA and LCA restrict the visual performance, and LCA is more detrimental than TCA.

Highlights

In recent years, there has been an increased interest in the study of the visual quality, especially the aberrations of human eyes
We investigate the properties of the transverse chromatic aberration (TCA) and longitudinal chromatic aberration (LCA) over the visible spectrum from 400nm to 760nm and evaluate the effects on visual quality
To evaluate the effect of the TCA on the visual quality of human eyes, the diameters of airy disk under the photopic condition are listed in column 8

Summary

Introduction

There has been an increased interest in the study of the visual quality, especially the aberrations of human eyes. LCA manifests as a change in the focal point as a function of the wavelength and is referred to as chromatic focal shift, while TCA occurs when chief rays of the spectrum passing through the center of the pupil strike on the retinal surface at different positions. In 1947, Wald and Griffin [2] measured the LCA of 14 eyes over the spectrum from 405nm to 750nm and found that the average magnitude is about 2.32D. With the development of wavefront technology, it is possible to measure the LCA objectively. In 1999, Susana Marcos et al [3] obtained the magnitude of LCA through measuring the wavefront aberration and it was about 1.26D over the spectrum from 450nm to 650nm

Methods

Results

Conclusion