How LASIK Surgery Works


The goal of LASIK is to reshape the cornea in a way that allows the eye to see clearly; we provide this treatment at our Albany, Bend, Salem and Beaverton, Oregon offices.

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DR. STANLEY TEPLICK: The cornea, the clear surface of the eye, is crystal clear and curved so it acts like a focusing lens. So by changing the shape of the cornea, we can change your vision. And that is the premise of all refractive surgery, including laser vision correction. Today we use a laser to change the curvature of the cornea. If you're near-sighted, the cornea is too steep for the length of the eye. So the effect of LASIK is to flatten the curvature of the cornea. On the other hand, if you're far-sighted, the cornea is too flat for the length of the eye, so the net result of LASIK is to steepen the cornea. And if you have astigmatism, all that means is the cornea is not completely spherical, oval or egg-shaped, or like the back of a spoon or a football shape. So the net result of LASIK is to make the cornea a spherical curvature.