Calculations of actual corneal astigmatism using total corneal refractive power before and after myopic keratorefractive surgery

摘要

PurposeTo calculate actual corneal astigmatism using the total corneal refractive astigmatism for the 4-mm apex zone of the Pentacam (TCRP4astig) and keratometric astigmatism (Kastig) before and after photorefractive keratectomy or laser in situ keratomileusis