The Different Types Of Laser Eye Surgery

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When most people think of laser eye surgery, they automatically think of LASIK. While it is true that LASIK is a type of laser eye surgery, there are a number of other laser procedures that can produce equally successful results for individuals suffering from myopia (nearsightedness), hyperopia (farsightedness), and astigmatism. In fact, there are actually four different types of laser eye surgery: PRK, LASIK, Customized LASIK, and LASEK.

PRK, or photorefractive keratectomy, makes use of a specialized cool laser beam, called an excimer laser, to remove excess corneal tissue. The removal of this tissue corrects the shape of the eye so that light entering the eye can be properly focused on the retina. The outer surface layer called the epithelium, is removed to expose the underlying corneal tissue. Once this tissue is revealed, the excimer laser is used to reshape the cornea. The main distinction between PRK and LASIK is that PRK does not make use of a corneal flap. Instead, the epithelium is allowed to gradually heal through the bodys natural healing process. To protect the exposed cornea, surgeons fit patients with a lightweight contact lens to serve as a bandage for the...

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