Threshold and Rate of Dark Adaptation as Functions of Aǵe and Time
- 1 August 1960
- journal article
- research article
- Published by SAGE Publications in Human Factors: The Journal of the Human Factors and Ergonomics Society
- Vol. 2 (3) , 109-119
- https://doi.org/10.1177/001872086000200301
Abstract
In order to describe one family of dark adaptation curves obtained from an age sample ranging from 16 through 89 years, a mathematical model of the form was derived. It was found that the model could be generalized. In addition it was concluded that threshold of dark adaptation as a function of time was lawfully related to chronological age. Rate of adaptation was determined by differentiating the equation at time 30 sec and time 6 min as follows: The results showed that rate of dark adaptation was a curvilinear function of age. These findings are consistent with the hypotheses that dark adaptation threshold and rate of dark adaptation depend upon basic underlying physiological processes that change with age.This publication has 1 reference indexed in Scilit:
- Alterations in Dark Adaptation as a Function of ageJournal of Gerontology, 1955