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How does laser in situ keratomileusis treat presbyopia?

Laser in situ keratomileusis (LASIK) involves removing slices of the cornea, causing it to focus light coming through to the retina. The surgeon uses either a special laser or an instrument to cut a flap in the cornea then make an intervention. There is a similar procedure called laser epithelial keratomileusis (LASEK), which does not require the surgeon to cut all the way through the cornea. Instead, a cut is made in the epithelium, outside the cornea, and slices are removed from the outside of the cornea. The effect is still to refocus light coming through the cornea.

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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.