[Changes in color differentiation using the 100-Hue Test. I. The total score on the test in relation to age]

The authors investigated colour differentiation, using the FM 100-hue test in healthy subjects without hypertension and diabetes and with a normal ophthalmological finding and normal functions. They examined 120 subjects, i.e. 240 eyes--120 male eyes and 120 female eyes in six decades from 21-80 years. The examination revealed a significant diminution of colour differentiation with advancing age but no difference in colour differentiation between men and women. The tests can be considered at the same time a basic orientation standard for evaluation of colour differentiation.