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LASIK (Laser-Assisted In Situ Keratomileusis) is a common eye surgery that permanently corrects refractive errors, including nearsightedness, farsightedness, and astigmatism. Since its FDA approval in 1991, it has become one of the most successful procedures, with over 20 million eyes treated worldwide.
read more about LASIK ...LASIK physically changes the shape of your cornea, the part of your eye responsible for most of your eye's focusing power. When your cornea has an irregular shape, light doesn't focus properly on your retina, which results in blurry vision. This is why the procedure uses an excimer laser to remove microscopic amounts of corneal tissue through photoablation, as it reshapes the cornea so that light focuses correctly on the retina.
The specific reshaping depends on your vision problem.
Also with modern LASIK treatments like Wavefront-guided LASIK, customized treatments are possible to address the subtle imperfections that affect visual quality. Wavefront-guided LASIK maps your eye's unique optical characteristics with 25 times greater precision than traditional methods.
Yes, LASIK is recognized by the FDA and clinical research as a safe and effective procedure. The data strongly support this conclusion:
Patients who experienced worse vision after the surgery were less than 1%. The FDA standard for safety with complications is 5%.
FDA reports high patient satisfaction after getting LASIK surgery, with 99% of patients saying they achieved 20/40 vision or better, while over 90% achieve 20/20. Research with follow-up periods extending beyond 10 years confirms the procedure is highly durable, with corrected vision staying stable over decades.
Most patients experience temporary dry eyes, which can be managed with artificial tears and prescription drops. Halos, glare, and starbursts around lights are common initially, especially at night, but typically fade within the first few weeks to months. You'll also likely feel a burning or gritty sensation after surgery, along with tearing, light sensitivity, and mild redness.
Serious complications are rare but can include corneal ectasia (progressive bulging and thinning of the cornea), flap displacement, inflammation beneath the flap, and undercorrection or overcorrection requiring enhancement procedures.
LASIK costs between $4,000-$10,000 upfront, but the average contact lens wearer spends over $10,000 in 20 years on lenses, solutions, and eye exams. In short, it typically pays for itself within 4-6 years. LASIK has an overall complication rate below 5%, with over 90% of patients achieving 20/20 vision. Beyond the numbers, the surgery eliminates daily maintenance, so you can go through with your daily activities without worrying about lost contacts or broken glasses.
However, LASIK isn't right for everyone. If your prescription is unstable or you have certain eye conditions, surgery may not be suitable. If you're properly screened, understand the procedure, and want freedom from corrective eyewear, LASIK is a worthwhile investment.
LASIK is remarkably fast and efficient.
The total procedure time is 30 minutes or less for both eyes. The actual laser reshaping takes less than 15 seconds per eye (depending on prescription strength). Including all preparatory steps, you'll typically spend under 30 minutes in the operating room.
Yes, you can undergo a LASIK enhancement (retreatment) to fine-tune results if needed due to undercorrection, overcorrection, or refractive regression over time.
Enhancements are rare. Less than 2% of patients require a touch-up within the first year, and the lifetime need stays below 5%. When necessary, enhancements are typically performed 3-6 months after initial surgery, allowing adequate time for vision to fully stabilize.
If retreatment is needed many years after initial LASIK, many surgeons prefer PRK (surface ablation) as the enhancement technique since they eliminate the need to lift the long-healed flap and minimize complications like epithelial ingrowth.
Yes and no. The physical corneal correction achieved by LASIK is permanent; the reshaped corneal tissue doesn't revert to its original shape.
However, "permanently fix" requires an important qualification.
LASIK corrects your cornea but cannot prevent the natural aging of your eye's internal lens. Almost everyone will eventually develop presbyopia around age 40, requiring reading glasses for close-up tasks. This is not a failure of LASIK. It's an inevitable biological progression that affects everyone, regardless of whether they had perfect natural vision or achieved perfect distance vision through LASIK.
Is LASIK surgery painful?
No. Anesthetic eye drops numb your eye completely before the procedure. During surgery, you'll only feel brief pressure when the suction ring is applied for flap creation. The laser reshaping itself is painless.
After surgery, you'll feel a burning or gritty sensation for a few hours to a few days as the numbing wears off. Your surgeon will provide pain relievers and eye drops to manage this discomfort. Rest with your eyes closed for 2-4 hours after the procedure to aid healing. If you experience sudden, severe pain, contact your doctor immediately, as this signals a complication.
What is the best age to get LASIK?
Between 25 and 40 years old. The FDA minimum age is 18, but your prescription must be stable for at least 12 months before surgery.
Is LASIK covered by insurance?
Generally, no. LASIK is considered an elective cosmetic procedure by most health insurance providers and is not covered by standard health plans.
Rare exceptions exist. If you can't tolerate glasses or contacts due to severe medical conditions, or if your vision problem resulted from a prior injury or surgery, documentation proving medical necessity can lead to coverage, though this is highly plan-dependent.
LASIK Eye Surgery. American Academy of Ophthalmology. https://www.aao.org/eye-health/treatments/lasik. Accessed March 12, 2026.
Surgery for Refractive Errors. National Eye Institute. https://www.nei.nih.gov/eye-health-information/eye-conditions-and-diseases/refractive-errors/surgery-refractive-errors. Accessed March 12, 2026.
Facts About LASIK Complications. American Academy of Ophthalmology. https://www.aao.org/eye-health/treatments/facts-about-lasik-complications. Accessed March 12, 2026.
LASIK Quality of Life Collaboration Project (LQOLCP). U.S. Food and Drug Administration. https://www.fda.gov/medical-devices/lasik/lasik-quality-life-collaboration-project-lqolcp. Accessed March 12, 2026.
When Is LASIK Not For Me? American Academy of Ophthalmology. https://www.aao.org/eye-health/treatments/when-lasik-is-not-for-me. Accessed March 12, 2026.
CustomCornea LASIK Patient Information Booklet. U.S. Food and Drug Administration. https://www.accessdata.fda.gov/cdrh_docs/pdf/P970043S022c.pdf. Accessed March 12, 2026.
Refractive Surgery. StatPearls. NCBI Bookshelf. https://www.ncbi.nlm.nih.gov/books/NBK560884/. Accessed March 12, 2026.
Astigmatism Explained: Causes, Diagnosis, Treatment. American Academy of Ophthalmology. https://www.aao.org/eye-health/diseases/what-is-astigmatism. Accessed March 12, 2026.