TEMPORAL EVOLUTION OF THE CORNEAL CURVATURE IN CONTACT-LENS WEARERS

In the present work, we have measured the corneal radii in a group of 126 healthy subjects, studying the temporal evolution of these radii a fter adaptation to contact lenses of polyhydroxyethyl methacrylate wit h 55% hydration. We measured the horizontal and vertical radii before adaptation, as well as after 3, 6 and 9 months of wearing contact lens es. The decreases were not significant (P < 0.05) in the corneal radii of these subjects; maximum decreases were reached the day after weari ng contact lenses, with subsequent recuperation, such that at 9 months the decreases, though persisting, were minimal. Copyright (C) 1996 Th e College of Optometrists. Published by Elsevier Science Ltd