Visual performance of aged subjects with tinted lenses

Abstract

We have analized the chromatic vision and the contrast vision of subjects older than 50 years wearing coloured lenses, in order to compare the performance of these kind of filters when used by this particular population. “PsychoWin 2.25” and “Cambridge Colour Test” (CCT) from Cambridge Research Systems were used to determine the contrast sensitivity function of these subjects and their chromatic discrimination thresholds around three stimuli. The results show that none of the filters studied performs optimally in both tests simultaneously, although the grey filter is the one which impairs performance in a lesser degree.