Colour discrimination was tested by FM 100-hue test in 106 patients (43 women and 63 men) after implantation PMMA IOL to the posterior chamber. Examined group of patients aged from 41 - 70 years was represented by 132 eyes. As a control were groups of healthy people (without hypertension and diabetes) of the same age categories with physiological eye findings and still clear crystalline lens. After IOL implantation the resulting total score of the test in examined patients of all decades was similar to the control group of healthy people. Even in healthy patients with IOL the colour discrimination is better beginning with 61 years (P < 0.05). Colour discrimination for red, green and blue colour has improved in comparison with the control groups and getting better with ageing. Clearly better sensitivity was in the area of green colour, it was observed in the age group starting with 61 years (P < 0.05) and for blue colour already since 51 years (P < 0.05). The improvement of colour discrimination in pseudophakic eyes in comparison with healthy population is slightly improving with increasing age.

        Key words: ageing, colour discrimination, FM 100-hue test, pseudophakia