Macular Function and the Photostress Test 2

Why HID headlights bother older drivers

“…14 34 Clinical photostress refers to classic scotomatic glare 30 40 41 caused by photopigment bleaching, regeneration, and associated psychophysical processes. [41][42][43][44][45][46][47][48] Clinical terminology will be used throughout the rest of this perspective.…”

Reliability, normative data, and the effect of age‐related macular disease on the Eger Macular Stressometer photostress recovery time

“…, 1967a). The same researchers also suggested that this test may be useful in distinguishing macular disease from optic nerve disease (Severin et al. , 1967b).…”

Changes in macular function throughout adulthood

“…This results in a transient state of insensitivity subjectively perceived as a scotomatous after-image. Visual function returns as the retinal pigments are resynthesised in the outer segments of the photoreceptors, and is dependent upon the integrity of the photoreceptors and the retinal pigment epithelium without involvement of other neural mechanisms [16][17][18]. The test has been used clinically to evaluate retinal, and particulary macular, function [18][19][20].…”

“…For example, it has led to wide disagreement as to the origin of contrast sensitivity loss with age [7]. Severin et al [17] found a difference in PSRT between subjects above and below 40 years of age. They used an elaborate apparatus including a xenon flash-tube and a GoldmannWeekers adaptometer, and account was taken of differences in pupil size with age.…”