Light Sensitivity as Related to Age and Sex

In order to provide normative data on light sensitivity as a function of age and sex, some 17,500 Ss, ages 16 to 92, were tested for both form recognition ability and glare recovery time under scotopic levels of illumination. The results show: (a) a progressive deterioration of performance on both tests with increasing age, (b) a very low correlation between form recognition ability and glare recovery time, and (c) no consistent difference in performance between males and females. Possible explanations for these findings are presented.