[Aphakia and contact lenses (author's transl)].

Four possibilities are offered to provide a good correction for aphakic individuals: no correction at all; spectacles; more than 60% adopt this solution, the contact lens which has optical, functional and aesthetic advantages. The intra-ocular lens (the best solution, but it is, not without complications). Since 1956 we have followed up 588 unilateral aphakians. Tolerance of contact lenses after one year is excellent: 61% wear the contact lenses 10-12 hrs. per day, 18% wear them 6-8 hrs. per day and 21% lost courage. There is a parallel between binocular vision and tolerance, which decreased over the years. Three factors are determinant here: state of binocular vision: many factors influence the quality of fusion: nature of the cataract, the moment of adaptation of the lens, loss of accommodation and anisoconie. Surrounding conditions e.g. dusty atmosphere also influence the tolerance; local state of the tissues. 15 years later, the situation has changed. 71.5% gave up the contact lenses completely and only 15% wear them 10-12 hrs. per day. The reasons of this abandonment are: diplopie, inflammation and local complications.