Radial keratotomy means: Radial Keratotomy is an eye procedure that flattens the cornea to reduce its optical power. It can be used to correct nearsightedness. The cornea is incised during the procedure. Radial incisions are used because they resemble bicycle wheels’ spokes.
(in Medical Dictionary)

What else does Radial keratotomy mean?

Keratotomy is a procedure that uses a circular pattern of incisions to correct or reduce myopia.
(in Merlin Dictionary)