Laser in Situ Keratomileusis: What It Is and What to Expect
Medically reviewed by Harsha Moole, MD, Internal Medicine. Last reviewed: October 2, 2026.
What kind of doctor provides Laser in Situ Keratomileusis?
Laser in Situ Keratomileusis, usually called LASIK, is an eye surgery that reshapes the clear front window of the eye to reduce the need for glasses or contacts. An ophthalmologist, a medical doctor specializing in eye care and surgery, performs it. An eye exam first confirms whether the surgery is a good fit.
What it is
LASIK is a type of refractive surgery, meaning surgery that changes how the eye focuses light. The surgeon creates a thin, hinged flap on the cornea, then a laser removes tiny amounts of tissue underneath to reshape it.
Why a doctor might recommend it
Doctors may suggest LASIK for adults who want to depend less on glasses or contacts. It is most often used for nearsightedness, farsightedness, and astigmatism, which cause blurry vision. A full eye exam confirms whether the eyes are healthy enough.
How to prepare
Before surgery, the eye doctor will measure the eyes and review the person's health history. Contact lenses should be stopped before testing because they can change the shape of the cornea. Someone else should drive the patient home.
What happens during it
LASIK is usually done in an outpatient setting, so the patient goes home the same day. Numbing eye drops are used, and the patient stays awake but should feel little pain. The laser often takes less than a minute per eye.
Recovery
Many people notice clearer vision within a day, though the eye may feel dry or gritty for a few days. Doctors prescribe eye drops to prevent infection and swelling, and patients use artificial tears for dryness. Rubbing the eyes is discouraged while the flap heals.
Risks and side effects
LASIK is common, but like any surgery it carries risks. Some people have lasting dry eyes, and others see glare, halos, or starbursts at night. Rare but serious problems include infection or corneal flap problems. Talking through these risks with the surgeon is the best way to make an informed choice.
Who performs it
An ophthalmologist performs LASIK. This is different from an optometrist, who examines eyes and fits glasses but does not perform surgery. A primary care doctor can refer a patient for an evaluation.
How a direct primary care or concierge doctor fits in
A direct primary care doctor charges a flat monthly fee instead of billing insurance, while a concierge doctor usually charges more and often works alongside insurance. Either type can discuss whether LASIK makes sense and refer the patient to a trusted ophthalmologist.
Common questions
Does LASIK hurt?
Most people report little or no pain because numbing drops are used. Some feel pressure during the procedure and mild irritation afterward.
How long does the vision improvement last?
The reshaping of the cornea is permanent, but vision can still change with age. Some people need glasses again years later, and results vary from person to person.
Can both eyes be treated on the same day?
Yes, many surgeons treat both eyes in one visit. Some patients and doctors prefer to treat one eye at a time.
Am I too old for LASIK?
There is no single age cutoff, but candidates need a stable glasses prescription and healthy eyes. Reading vision changes that come with middle age can still require glasses after LASIK.
Sources
Medical Disclaimer
This content is for general educational and informational purposes only and is not medical advice. It is not a substitute for professional medical advice, diagnosis, or treatment, and reading it does not create a doctor-patient relationship. Always seek the advice of your physician or another qualified health provider with any questions about a medical condition, and never disregard or delay seeking professional advice because of something you read here. If you think you may have a medical emergency, call 911 (or your local emergency number) immediately.
