PRK Reduces the Risk of Epithelial Ingrowth after LASIK Regression

The PRK procedure reduces the risk of epithelial ingrowth when the procedure is used to correct for regression after LASIK, according to a report from Ocular Surgery News.

Regression occurs when your cornea begins to return to its original vision error. Serious regression after LASIK occurs to only a small percentage of patients, and most often to patients with farsightedness (hyperopia). Some people experience regression many years after their LASIK surgery. A second LASIK procedure is often used to correct regression, which typically involves re-lifting the original corneal flap, instead of cutting a new one.

Unfortunately, these "lift-flap enhancement" procedures run the risk of causing epithelial ingrowth, a complication in which epithelial cells (cells on the outer surface of the cornea) grow underneath the corneal flap.

Epithelial ingrowth tends to occur with flap procedures. In PRK, a corneal flap is not created. Instead, the outer surface of cells is vaporized, or "ablated." Apparently, patients experiencing regression can still achieve corrected vision with PRK while avoiding the risk of epithelial ingrowth.

To learn more about LASIK, please contact an experienced eye surgeon in your area.