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What is PRK? PRK (Photorefractive Keratectomy) is a laser surgery to correct nearsightedness (myopia). An excimer laser beam is used to flatten the front of the cornea. The laser beam removes small amounts of tissue from the front of the cornea. This differs from RK, which uses a knife to make deep cuts around the center of the cornea. What is LASIK? LASIK (Laser in -situ keratomileusis) is a procedure to also correct nearsightedness. With the LASIK procedure, a thin layer of the cornea is lifted to create a "flap" tat stays connected on one side. Next the Excimer Laser sculpts the cornea with a cool, ultraviolet light. Finally, the "flap" is returned to it's original position for a quick, natural recovery. What is nearsightedness? Nearsightedness (myopia) is when the curvature of the cornea is too steep, the focus of the rays of light that enter the eye fall short of the retina. The result is a blurry view of distant objects What is astigmatism? Astigmatism can exist alone or in combination with nearsightedness or farsightedness. With this condition your eye becomes oval-shaped like a football instead of round, causing distortion when the eye tries to focus. What is farsightedness? Farsightedness (hyperopia) occurs when an eye is too short for the cornea's curvature. Light rays entering the eye focus behind the retina, and as a result, a blurred image is produced. Is it covered by insurance? |
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