Laser epithelial keratomileusis (LASEK) is a modified form of photorefractive keratectomy (PRK). It is also referred to as Epithelial LASIK or E-LASIK. It was developed to reduce the chance of complications that occur with LASIK flap creation and is considered a safer alternative for most patients.

Unlike in PRK, the epithelium is not removed in LASEK. The surgeon instead loosens the epithelium (the outer layer of the cornea) and folds it back so that the laser can reshape the exposed cornea. After the laser application, the surgeon folds the loosened flap of epithelium back over the corneal bed and places a bandage contact lens over the top. Visual recovery following LASEK is generally faster than in PRK but slower than in LASIK.

In many ways, what you can expect from LASEK is similar to what you can expect from LASIK, but there are some differences. You may feel eye irritation the first day or two after the procedure. It will probably take a longer time (up to three to five days) to recover good vision after LASEK than it would following LASIK. Many surgeons believe that the results of laser vision correction are more predictable and stable using this procedure though. Many surgeons consider LASEK a better option for patients considering refractive surgery.

Please see our section titled “LASIK” for other important information. The procedure for LASEK is the same with the exception of the creation of a flap.