LASIK surgery: Is it right for you?
LASIK surgery may reduce or eliminate the need for corrective lenses — but for some people, the surgery is too risky. Find out whether you're a good candidate for LASIK surgery.By Mayo Clinic Staff
If you're tired of wearing eyeglasses or contact lenses, you may wonder whether laser-assisted in-situ keratomileusis (LASIK) surgery is right for you. After all, LASIK surgery has a good track record and most people are satisfied with the results.
But LASIK surgery isn't the most appropriate vision-correction option for everyone, and it does have some risk. Read on to determine whether you're a good candidate for LASIK surgery.
When is LASIK surgery a good choice?
LASIK surgery is a type of refractive eye surgery. During the procedure, an eye surgeon creates a flap in the cornea and then uses a laser to reshape the cornea and correct refractive error problems in the eye. LASIK surgery is most appropriate for people who have a moderate degree of refractive error, causing:
- Nearsightedness (myopia), in which you see nearby objects clearly, but distant objects are blurry
- Farsightedness (hyperopia), in which you can see far objects clearly, but nearby objects are blurry
- Astigmatism, which causes overall blurry vision
A good surgical outcome depends on careful evaluation of your eyes before the surgery.
What about LASIK surgery for presbyopia?
By the early to mid-40s, most adults have lost some ability to focus on nearby objects (presbyopia), which results in difficulty reading small print or doing close-up tasks. The condition may continue to worsen until about age 65.
If you have presbyopia, LASIK surgery may give you clear distance vision, but it can actually worsen your ability to see objects close up.
To maintain your ability to see close objects, you might choose to have your vision corrected for monovision. With monovision, one eye is corrected for distant vision, and the other eye is corrected for near vision. Not everyone is able to adjust to or tolerate monovision. It's best to do a trial with contact lenses before having a permanent surgical procedure.
What are the risks of LASIK surgery?
As with any surgery, LASIK surgery carries risks, including:
May 06, 2016
- Undercorrection, overcorrection, or new or additional astigmatism. If the laser removes too little or too much tissue from your eye, you won't get the clearer vision you wanted. Similarly, uneven tissue removal can result in astigmatism.
- Vision disturbances. After surgery you may have difficulty seeing at night. You might notice glare, halos around bright lights or double vision.
- Dry eyes. LASIK surgery causes a temporary decrease in tear production. As your eyes heal, they may feel unusually dry. Even after healing, you may experience an increase in dry eye.
- Vision loss. In rare situations, you may have a decrease in the best corrected vision.
- Flap problems. Folding back or removing the flap from the front of your eye during surgery can cause complications, including infection and excess tears.
See more In-depth
- Aaron MT, et al. Why preoperative acuity predicts postoperative acuity in wavefront-guided LASIK. Optometry and Vision Science. 2010;87:861.
- Bower KS. Laser refractive surgery. http://www.uptodate.com/home. Accessed March 11, 2016.
- When is LASIK not for me? U.S. Food and Drug Administration. http://www.fda.gov/MedicalDevices/ProductsandMedicalProcedures/SurgeryandLifeSupport/LASIK/ucm061366.htm. Accessed March 11, 2016.
- Mian SI. Visual impairment in adults: Refractive disorders and presbyopia. http://www.uptodate.com/home. Accessed March 11, 2016.
- Klug SE, et al. Long-term follow-up on intracorneal ring segment inserted for the correction of myopia. Acta Ophthalmologica. 2009;87:920.
- AskMayoExpert. Refractive laser surgery. Rochester, Minn.: Mayo Foundation for Medical Education and Research; 2015.
- Softing Hataye AL (expert opinion). Mayo Clinic, Rochester, Minn. April 26, 2016.