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Photorefractive Keratectomy (PRK) is a precise, minimally invasive method of reshaping the cornea. Other names for this procedure are LASIK, epi-LASIK, and ASA. At MAIDA CustomVision, we use a state-of-the-art computerized excimer laser to gently remove a thin layer of tissue from the corneal surface.  The reshaping of the cornea helps to reduce or eliminate the need for glasses.  The treatment takes 10 to 20 seconds.  A contact lens is placed on the cornea after the treatment to keep the patient comfortable while the epithelial layer heals. This occurs in 3-5 days in most cases. The contact lens may be slightly bothersome and the vision is somewhat compromised during this time. After the cornea is healed and the contact lens is removed, vision will sharpen as the cornea continues to smooth.

PRK affords excellent results and is the procedure of choice for Navy pilots, astronauts and patients with thin corneas or slightly irregular corneas. In U.S. clinical trials, 100 percent achieved improved vision and two-thirds were 20/20.

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