Corneal WFG Versus AF Trans PRK in Myopic Patients With High Corneal HOA

TransPRK using ESIRIS flying spot excimer laser system (SCHWIND AMARIS®500E, SCHWIND eye-tech-solutions, Kleinhostheim, Germany), with 500 Hz repetition rate for faster treatments and scanning spots and with smart pulse technology. Eye-tracking during laser ablation was achieved using a 1050 Hz infrared eye tracker centered on the pupil. Static cyclotorsion control (SCC) compensation was obtained for all patients in corneal WFG group.

TransPRK was performed to eligible myopic patients with or without astigmatism with corneal HOAs ≥ 0.35 µ utilizing aberration free patterns provided by ORKCAM software (SCHWIND eye-tech-solutions, Kleinostheim, Germany)