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Laser Eye Surgery
Reviewed by Medicinsk Expert•Last updated: 2026-10-22•Surgery Rehabilitation

Laser Eye Surgery

Laser eye surgery reshapes the cornea to change the eye's focusing power, potentially eliminating the need for glasses or contact lenses.

Overview

Laser eye surgery is a procedure that corrects vision by reshaping the cornea, the clear front part of the eye. By altering the shape of the cornea, the eye's focusing power is changed.

Types and Considerations

There are various types of laser eye surgery available. LASIK (laser-assisted in situ keratomileusis) is one of the most common procedures, with many patients achieving 20/20 vision. However, like all medical procedures, it involves both risks and benefits. Only your eye doctor can determine if you are a suitable candidate for the surgery.

Frequently Asked Questions

Patients often report halos, glare, or reduced contrast at night, especially after higher corrections. Using a larger optical zone during surgery, ensuring adequate corneal thickness, and following post‑op anti‑inflammatory drops can reduce these effects. If symptoms persist, lubricating drops, low‑dose pilocarpine, or a brief trial of night‑vision glasses can help.
Mild to moderate dry eye is not an absolute contraindication, but you’ll need a thorough evaluation. Pre‑treatment with artificial tears, punctal plugs, or prescription anti‑inflammatory drops (e.g., cyclosporine) for several weeks can improve tear film. Some surgeons may recommend surface‑based procedures like PRK or SMILE, which tend to preserve more corneal nerves and may be gentler on dry eyes.
Yes. Soft lenses should be removed at least 1 week before the pre‑op exam, and rigid gas‑permeable lenses at least 2‑3 weeks prior. This allows the cornea to return to its natural shape, ensuring accurate measurements for laser mapping. Your surgeon will give exact timelines based on the type of lenses you use.
Most patients achieve functional vision within 24‑48 hours, but night vision may continue to improve for 3‑6 weeks. Many surgeons clear patients for daytime driving after 24 hours and for night driving after about 2‑3 weeks, provided there are no glare or halos. Your eye doctor will confirm when it’s safe based on your specific healing pattern.
Source: MedlinePlus, National Library of Medicine

MedlinePlus brings together authoritative health information from the National Library of Medicine (NLM), the National Institutes of Health (NIH), and other government agencies and health-related organizations.

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