LASEK

LASEK, or Laser Assisted Sub-Epithelial Keratectomy*, is another form of laser vision correction surgeons may choose to use in place of LASIK based on individual patient needs.

Like LASIK, LASEK* uses a laser beam to reshape or correct the shape of the eye. The major difference between LASIK and LASEK* is which part of the cornea is treated.

With LASIK, a flap is created in the top layer, folded back for the reshaping of the underlying tissue, and put back into position at the end of the procedure. This flap serves as a natural bandage for the cornea.

LASEK* is considered a corneal surface treatment like PRK. The laser is not treating tissue under a corneal flap as with LASIK.

The LASEK Procedure*

During LASEK* eye surgery, the surface layer of the cornea, known as the epithelium, is loosened. Once this surface layer is moved aside, the laser reshapes the surface of the cornea. After the ablation is completed, the layer of epithelial cells is replaced over the exposed cornea to aid in healing, and a "bandage" contact lens is used to increase comfort.

The LASEK recovery time is a bit longer than with LASIK. Also, there is more discomfort with LASEK but this usually lasts only a few days.

LASEK & PRK

While both LASEK* and PRK are considered corneal surface treatments, there are very subtle differences between them. Some physicians feel that the LASEK healing process is faster and less painful than with PRK. However, there is no broad agreement among experts as to whether this is true.

* No laser system is FDA-approved for LASEK, but surgeons are allowed to perform this treatment based on surgeon discretion.