1989 In 1989, a United States patent was granted to Gholam A. Peyman, MD, for a method of modifying the corneal curvature of the eye with a laser-assisted surgical procedure in which a flap was cut in the cornea, the flap pulled back to expose the corneal bed, the exposed surface ablated and the flap replaced. 150 million More than 150 million Americans use corrective lenses to compensate for refractive errors. Americans spend more than $15 billion each year…
