LASIK is a surgical procedure that can eliminate a person’s dependency on glasses or contact lenses by permanently changing the shape of the cornea of the eye. For clear vision, the eye's cornea and lens must bend (refract) light rays properly, so that images are focused on the retina. If the light rays aren't clearly focused on the retina, the images you see are blurry.
This blurriness or refractive error is caused by an imperfectly shaped eyeball, cornea, or lens. LASIK uses an ultraviolet laser to precisely remove corneal tissue to correct the shape for better focusing.
The surgery is performed most often on people who have myopia (nearsightedness)
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