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What is PRK?
PRK stands for photorefractive keratectomy, or “removing a portion of the cornea with laser light to change its refractive power.” In PRK, the surface cells of the cornea are brushed away and then the laser is used to sculpt the cornea. The amount of tissue removed is usually less than the width of a human hair. Since the eye responds to the loss of these surface cells with a strong healing response, there is some initial discomfort, redness, and swelling.
PRK is an excellent alternative when there is a contraindication to LASIK, such as in certain corneal conditions, including thin corneas and surface problems or scars. It is also an excellent choice for those with moderate to severe dry eye, or those at risk for eye injuries. |
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