Affiliation:
1. Universidad de Zaragoza
Abstract
Disability glare is defined as the loss of contrast sensitivity of the retinal image
due to intraocular straylight originated from the presence of an
intense and broad bright light in the field of vision. This loss of
vision can range between vision loss at high spatial frequencies or
total temporal blindness. If the extreme case occurs, the recovery
time is crucial in night driving conditions or those professional
activities in which maximum visual acuity is required at any moment.
The recovery time depends mainly on the intensity and glare angle of
the light source, ocular straylight, and the photoreceptor response at
the retina. The recovery time can also be affected by ocular
pathologies, aging, or physiological factors that increase ocular
straylight. The aim of this work is to develop a new optical
instrument based on psychophysical methodology as well as to
investigate the recovery time from total disability glare
(photobleaching) as a function of the contrast of the visual target
and the glare angle of the source in healthy volunteers. Results
showed significant exponential correlation between recovery time and
contrast of the visual target and linear correlation between contrast
sensitivity and the glare angle. Those findings allowed to obtain an
empirical expression to compute the recovery time required to restore
contrast sensitivity baseline vision after photobleaching. Finally, a
statistical dependence of recovery time with age was found for short
glare angles that disappear as the glare angle increases.
Subject
Atomic and Molecular Physics, and Optics,Engineering (miscellaneous),Electrical and Electronic Engineering
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献