|  | Photorefractive Keratectomy Photorefractive Keratectomy (PRK)   
 PRK (photorefractive keratectomy) involves the removal of the top  surface level of the cornea called the epithelium. This exposes the  inner cornea so that a cool ultraviolet laser can re-sculpt it to alter  the curvature of the eye. For nearsighted people the surgeon flattens  the steep cornea and for farsighted people he or she makes the cornea  steeper. The laser can also correct astigmatism by smoothing an  irregularly shaped cornea. This allows the...Read More
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