Radial Keratotomy
also known as RK, was the first successful technique for surgically correcting nearsightedness. The procedure began in the 1950's by Dr. Sato in Japan. After enjoying initial good results, most of his patients subsequently suffered serious problems because the cuts made were too deep.

The technique of performing RK consists of making a series of very thin but deep radial cuts in the cornea. During the 1970's, Dr. Fyodorov in Russia and a number of American and European Ophthalmologists perfected Dr. Sato's method to make it safe, reliable and predictable.
Advances in the technique included improved diamond blades, more accurate means of measuring corneal thickness and appreciation of age related variations, and fewer cuts. Today, anywhere from 3 to 8 radial cuts may be performed initially. This technique still offers an excellent option for patients whose nearsightedness is relatively mild and who do not have much astigmatism.

Although RK can produce excellent results with low amounts of myopia, this procedure has been largely replaced by newer techniques.