Refractive eye surgery has been used globally since the 1970s. In 1987, refractive laser surgery opened up a entirely new possibilities for the correction of visual problems. Initially laser surgery was conducted using the PRK (Photo Refractive Keratectomy) method. Since the early 1990s, however, LASIK (Laser in-situ Keratomileusis) has become the treatment of choice around the world. Laser surgery has been evaluated and studied in numerous clinical studies involving thousands of patients by several independent regulatory bodies like the US Food and Drug Administration (FDA).Today millions of people already enjoy independence from glasses and contact lenses, and an improved quality of life , thanks to refractive laser surgery