Photorefractive Keratectomy Using the Summit SVS Apex Laser With or Without Astigmatic Keratotomy

Abstract

PRK, with or without AK, effectively reduced myopia in all eyes by 6 months after surgery. Predictability tended to decrease with increasing attempted correction, even for eyes with relatively low to moderate myopia. PRK may induce surface asymmetry and irregularity at 6 months, and these alterations tend to be greater as the attempted correction increases.