Effects of higher-order aberration correction on stereopsis at different viewing durations.

Jin‐Ho Kang ,Fei Xiao,Yiyun Hu,Guomao Tang,Haoxin Zhao,Yun Dai,Junlei Zhao,Yudong Zhang

doi:10.1117/1.jbo.20.7.075005

Abstract

To better understand how the eye's optics affects stereopsis, we measured stereoacuity before and after higher-order aberration (HOA) correction with a binocular adaptive optics visual simulator. The HOAs were corrected either binocularly or monocularly in the better eye (the eye with better contrast sensitivity). A two-line stereo pattern served as the visual stimulus. Stereo thresholds at different viewing durations were obtained with the psychophysical method of constant stimuli. Binocular HOA correction led to significant improvement in stereoacuity. However, better eye HOA correction could bring either a bad degradation or a slight improvement in stereoacuity. As viewing duration increased, the stereo benefit approached the level of 1.0 for both binocular and better eye correction, suggesting that long viewing durations might weaken the effects of the eye's optical quality on stereopsis.

Highlights

The imperfections of the eye’s optics, which are generally referred to as ocular aberrations, set a limit on our vision
Random-dot stereogram tests were difficult to implement due to the small field of view limited by the isoplanatic range of the Adaptive optics (AO) system
Significant improvement in stereoacuity was observed upon binocular realtime closed-loop higher-order aberration (HOA) correction

Summary

Introduction

The imperfections of the eye’s optics, which are generally referred to as ocular aberrations, set a limit on our vision. The existence of these ocular aberrations compromises the image quality on the retina and, in turn, affects our visual experience. Adaptive optics (AO) specializes in sensing and manipulating optical aberrations. It was first demonstrated for human eyes by Liang et al.[1] With the introduction of AO into vision research, we were well-equipped to explore vision beyond traditional domains. Several comprehensive and informative reviews on AO for visual function research have been made so far.[2,3,4]

Methods

Results

Conclusion