PRK

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•  What is Refractive Surgery?
•  Introduction to Refractive Surgery

PRK (Photo Refractive Keratectomy) was the first procedure performed using the Excimer laser. It corrects vision by reshaping the cornea. In the first step, the epithelium, a thin layer of clear protective skin that covers the cornea, is completely removed. After the Excimer laser reshapes the surface (as in LASIK), the epithelium grows back over the treated area, usually within three to seven days. Functional vision typically returns within the first week.