PRK or Photorefractive Keratectomy is a procedure in which the surface of the cornea is reshaped using an Excimer laser. The accuracy of this procedure is virtually identical to LASIK. PRK may be preferred for certain patients with very thin corneas, as it does not involve the creation of a flap. This is a completely bladeless approach to eye surgery, which is also attractive to some patients.

Disadvantages include slightly more discomfort post-operatively, and a slower return of vision as compared to LASIK. In PRK, the surface cells of the cornea are removed, and the excimer laser reshapes the surface of the eye. A temporary contact lens is placed as the surface cells re-grow over the next few days.

The benefits of PRK may include:

• Freedom from glasses or contact lenses, even after years
  of required use
• A better self-image
• Improved vision for sports, work and other activities
  Freedom to enjoy a more active lifestyle