The effect of changes in vitamin A content in the diet upon recovery from glare blindness

Abstract

This study differs from others on the same subject in that the method of measurement was simplified to make it practical to use on large groups of automobile drivers in a relatively short time. Secondly, changes in diet rather than the use of vitamin concentrates determined the amount of vitamin intake. Thirdly, individual variations were studied. From the 10 cases used it was found that a diet deficient in vitamin A caused a significant increase in recovery time from glare for the first 5 days, after which recovery time remained relatively the same. (PsycInfo Database Record (c) 2025 APA, all rights reserved)