Photorefractive Keratectomy (PRK) utilizes a type of laser called an excimer laser to decrease nearsightedness. This form of laser vision correction removes a precise amount of tissue using a "cold" ultraviolet laser. The laser utilizes a sophisticated computer program that calculates and removes a precise amount of tissue from the center of one's cornea to decrease its curvature. This change in the cornea brings the focal point of the eye closer to the retina and improves one's distance vision. Home | Anatomy Of An Eye | How
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