PRK (Photorefractive Keratectomy)

PRK

PRK (Photorefractive keratectomy) is a procedure much like LASIK and can be used to correct most vision disorders such as hyperopia, myopia, or astigmatism. PRK also uses a laser to change the shape of the cornea, allowing light to focus more clearly in the eye and bring vision closer to normal.

Unlike LASIK, with PRK, a flap is not created on the surface layer of the cornea. Instead, the surgeon wipes off a very thin layer of the surface layer of the cornea (epithelium). A laser is then used to reshape the curve of the cornea, the same laser that is used for LASIK. After the procedure a transparent "bandage", similar to a contact lens, is placed over the cornea to promote healing.

The procedure is painless and visual recovery occurs over several days and can often be accompanied by mild discomfort. PRK is primarily used for patients who have thin corneas, are at risk of occupational damage to the eye, or are reluctant to have a LASIK flap.

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