ABSTRACT
Introduced in 1972, Radial Keratotomy (RK) was perhaps the first refractive surgery to gain wide popularity among both patients and surgeons. It is estimated that between 1980 and 1990, approximately 1.2 million patients underwent incisional RK worldwide.1 It was widely performed up to the late 1990s and as recently as 1996, about 39 percent of refractive surgeons in the United States of America were performing 1 to 5 RK procedures per month.2 Ever since, its popularity has gone down substantially due to the advent of LASIK.
