How does laser vision correction work?

Answer:
Laser vision correction works by changing the

shape of the cornea, the clear, front part of the eye, to enable it to process light to form an image on the retina, which is on the back inside surface of the eye.

If you’re short-sighted your cornea is flattened, if you’re long-sighted your cornea is made steeper, and if you suffer with astigmatism your cornea is made more spherical. LASIK, a type of laser vision correction, corrects vision by reshaping the corneal tissue beneath the surface of the cornea via a flap made in the top of the cornea, while in PRK surgery the cornea is shaped on the surface, on the bare corneal tissue.


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