Why it's done

LASIK surgery may be an option for the correction of one of these vision problems:

  • Nearsightedness (myopia). When your eyeball is slightly longer than normal or when the cornea curves too sharply, light rays focus in front of the retina and blur distant vision. You can see objects that are close fairly clearly, but not those that are far away.
  • Farsightedness (hyperopia). When you have a shorter than average eyeball or a cornea that is too flat, light focuses behind the retina instead of on it. This makes near vision, and sometimes distant vision, blurry.
  • Astigmatism. When the cornea curves or flattens unevenly, the result is astigmatism, which disrupts focus of near and distant vision.

If you're considering LASIK surgery, you probably already wear glasses or contact lenses. Your eye doctor will talk with you about whether LASIK surgery or another similar refractive procedure is an option that will work for you.

June 01, 2017
References
  1. Bower KS. Laser refractive surgery. http://www.uptodate.com/home. Accessed Aug. 17, 2016.
  2. LASIK — Laser eye surgery. American Academy of Ophthalmology. https://www.aao.org/eye-health/treatments/lasik. Accessed Jan. 10, 2017.
  3. Bastawrous A. Laser refractive eye surgery. British Medical Journal. 2011;342:d2345.
  4. Yanoff M, ed., et al., eds. LASIK. In: Ophthalmology. 4th ed. Edinburgh, U.K.: Mosby Elsevier; 2014. https://www.clinicalkey.com. Accessed Jan. 10, 2017.
  5. When is LASIK not for me? U.S. Food and Drug Administration. http://www.fda.gov/medicaldevices/productsandmedicalprocedures/surgeryandlifesupport/lasik/ucm061366.htm. Accessed Jan. 10, 2017.
  6. What should I expect before, during, and after surgery? U.S. Food and Drug Administration. http://www.fda.gov/medicaldevices/productsandmedicalprocedures/surgeryandlifesupport/lasik/ucm061270.htm. Accessed Jan. 10, 2017.
  7. Wilkinson JM (expert opinion). Mayo Clinic, Rochester, Minn. Jan. 10, 2017.
  8. Kruisselbrink SJ (expert opinion). Mayo Clinic, Rochester, Minn. July 26, 2016.
  9. Patel SV (expert opinion). Mayo Clinic, Rochester, Minn. April 3, 2017.
  10. AskMayoExpert. Refractive laser surgery. Rochester, Minn.: Mayo Foundation for Medical Education and Research; 2016.