Laser eye surgery

Credit: PASCAL GOETGHELUCK/SCIENCE PHOTO LIBRARY

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Caption: Laser eye surgery. Close-up of the eye of a patient undergoing LASIK eye surgery. LASIK (laser-assisted in-situ keratomileusis) is a type of refractive laser eye surgery that corrects a condition called astigmatism. A laser is used to correct blurred vision caused by an irregular curvature of the cornea or lens. It is also used to correct myopia (short-sightedness) and hyperopia (long-sightedness). The outer layer of the cornea has been cut open and a flap (right) pulled open. The laser is then used to reshape the stroma, the middle layer of the cornea.

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