[Contact correction: method for arresting the progress of keratoconus].

The effect of rigid contact lenses on the course of keratocone during different stages is studied. A total of 121 patients (234 eyes) aged 11 to 49 years were examined. Early onset of keratocone is associated with its more rapid progress; the evolution of the disease from the initial to terminal stage takes 7 years with lenses and 4 without them; the progress of keratocone from one stage to another with contact correction takes more than 2 years versus less than 1.5 years without correction. Rigid contact lenses inhibit the progress of keratocone only at the initial stage of the disease.