Articles: PDF OnlyPhotorefractive keratectomy to treat low, medium, and high myopia: A multicenter studyDitzen, K. M.D.1; Anschütz, T. M.D.; Schröder, E. M.D.Author Information 1Reprint requests to K Ditzen, M.D., Bismarckstrasse 4, 69469 Weinheim, Germany. Presented at the 3rd American-International Congress on Cataract, IOL and Refractive Surgery, Seattle, May 1993. Journal of Cataract & Refractive Surgery: March 1994 - Volume 20 - Issue - p 234-238 doi: 10.1016/S0886-3350(13)80759-6 Buy Metrics Abstract This prospective, multicenter study investigated what influence patient age, sex, and time to re-epithelialization after myopic photorefractive keratectomy (PRK) have on stability of achieved correction and intensity of corneal haze. Seven surgeons performed PRK to correct myopia on 325 eyes using the same operative procedure, type of laser, and post-PRK treatment. Follow-up was from six to 12 months. Results indicate that corneal haze intensity is influenced by the time to re-epithelialization of the treated corneal surface. Patient age and sex may also affect haze intensity, although the results from this study were not conclusive. © Williams & Wilkins 1994. All Rights Reserved.