Main Menu Back to Corrective Procedures About Eye Care Professionals Corrective Eyewear Prescription Drugs & Supplements Preserving Your Sight Vision Insurance Eye Diagram Glossary   Our Other Sites Bookstore Directory Other Resources Statistics Vision Loss and Blindness Resources Search All Sites Site Map Corrective Procedures - PRK (Photorefractive Keratectomy) PRK is an outpatient procedure generally performed with local anesthetic eye drops. This type of refractive surgery gently reshapes the cornea by removing microscopic amounts of tissue from the outer surface with a cool, computer-controlled ultraviolet beam of light. The beam is so precise it can cut notches in a strand of human hair without breaking it, and each pulse can remove 39 millionths of an inch of tissue in 12 billionths of a second. The procedure itself takes only a few minutes, and patients are typically back to daily routines in one to three days. All brands and product names are trademarked or registered trademarks of their respective companies. Copyright of syndicated content belongs to it’s respective author or news organization. Original content (including "look and feel") Copyright © 2001-2006  •  Vision Loss and Blindness Resources  •  All rights reserved.