Lasik vs PRK

Terms used on this page:

  • Lasik – Laser assisted sub-epithelial keratectomy
  • Lasek – Laser epithelial keratomileusis
  • PRK – Photorefractive keratectomy

Both Lasik/Lasek and PRK procedures involve changing the shape of the cornea of the eye in order to redirect incoming light focus with the goal of improving vision.

The Lasik procedure creates a flap in the outer corneal tissue and the laser reshaping work takes place under this flap.  After reshaping, the flap is repositioned and heals rapidly.

PRK reshapes the cornea and the epithelial layer of the cornea is removed and no flap is created.  This outer tissue rapidly regenerates.
Comparing the two methods, both have similar outcomes one year after surgery.  Patients report less discomfort and pain with lasik compared with PRK.