Review: The Changing Status of Radial Keratotomy for Myopia. Part II

Abstract

The basic principles of radial keratotomy for myopia were described in 1898: radial incisions flatten the cornea in the direction of the incision, deep incisions were more effective, and some of the result diminished as the cornea healed. Most surgeons now agree on clear zone diameters between 3.0 and 4.0 mm, four to eight incisions, and the use of a diamond micrometer knife, but consensus has not been reached on the value of deepening incisions and on how to use preoperative variables in designing the operative technique.