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

Inclusion Criteria: * Myopic patients with or without astigmatism Exclusion Criteria: * severe dry eye, * blepharitis, * corneal disease, * contact lens warpage, * cataract, * uveitis * posterior segment anomalies involving the macula or optic nerve * systemic conditions; diabetes mellitus, connective tissue disease, pregnancy or nursing. Also, any patient who had previous ocular surgery including keratorefractive surgery was excluded