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Contact lenses are small prescription lenses, worn in “contact” with the eye. They are designed to correct refractive errors and maintain ocular health. They float on the tear film layer on the surface of the cornea. Modern contacts are much more than small eyeglass lenses that fit onto your eyes. They do, however, function much like regular eyeglasses refracting and focusing light so that objects appear clearly. Since the lenses stick to the tear fluid on your eye surface, they move naturally with you. This is but one advantage contacts have over glasses.
