Photorefractive Keratectomy (PRK)

Photorefractive keratectomy (PRK) was the first laser refractive procedure approved by the FDA (in 1995) and can treat myopia, hyperopia, and astigmatism. This procedure uses excimer laser pulses to reshape the cornea so that it can focus light more effectively. In PRK, a small portion of the epithelium (the most superficial layer of the cornea) is removed and the laser is used to reshape the underlying cornea.

Advantages of PRK over LASIK

  • A corneal flap does not have to be created during PRK.  Therefore, PRK is a slightly easier procedure to perform and there is no risk of a flap complication.
  • May be performed in some patients whose corneal shape or thickness does not permit safe performance of LASIK

Additional Resources

  • LASIK 101 (Video) - For many people, refractive surgery offers tremendous benefits: clearer vision and freedom from contact lenses and glasses. But, there is a lot to consider before you choose LASIK surgery or any other form of vision-correcting surgery. First, are you a good candidate for the surgery? Which of several procedures is best for you? What are the risks?
  • Pros and Cons of LASIK: Are the Risks Worth the Cost? - Deciding to get LASIK surgery requires thought and evaluation. Here’s what a Michigan Medicine ophthalmologist tells prospective recipients.
  • LASIK vs. PRK: Which Vision Correction Surgery Is Right for You? - Both eye surgeries have the same intent — though they are different. A Michigan Medicine ophthalmologist explains how he helps patients make the best choice.

Questions? Ask Us

We're always pleased to answer your questions by phone or e-mail: 734.615.5274 or lasik@umich.edu.