Corneal Topographic Response to Circumferential Keratotomies

Abstract

To standardize circumferential keratotomy as a clinically useful ke rato refractive procedure to alter astigmatism, this study investigated the corneal topographic response of 20 eye bank eyes to circumferential keratotomies. Five eyes received 30°, 60°, and 90° symmetrical keratotomies around each of four optic zones. Systematic corneal topographic change was evident in patterns which were repeated for all optic zones and keratotomy lengths, Clinical results can be evaluated against this model.