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What is laser in situ keratomileusis (LASIK) surgery?

Dr. Jeanne Morrison, PhD
Family Practitioner

LASIK surgery is an eye procedure designed to correct vision impairments such as myopia. In LASIK surgery, a doctor makes a cut to reshape your eye. This allows light to reflect directly on the retina, instead of in front of it as is the case in myopia. LASIK corrects your nearsightedness and removes the need to wear glasses or contacts.

Laser in situ keratomileusis (LASIK) is a procedure through which a laser is used to change the shape of the cornea of the eye. The procedure is used to correct farsightedness, nearsightedness or astigmatism.

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Laser in situ keratomileusis, or LASIK, is an outpatient surgical procedure used to treat myopia (nearsightedness), hyperopia (farsightedness) and astigmatism. With LASIK, your ophthalmologist (Eye M.D.) uses a laser to reshape the cornea (the clear covering of the eye) to improve the way the eye focuses light rays onto the retina.

LASIK may decrease your dependence on glasses and contacts or, in some cases, allow you to do without them entirely. According to the American Academy of Ophthalmology, seven out of 10 LASIK patients achieve 20/20 vision, but 20/20 does not always mean perfect vision. If you have LASIK to correct your distance vision, you’ll probably still need reading glasses by around age 45. Therefore, it is important for you to consider the possibility that LASIK may not give you perfect vision.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.