
Contact lenses are corrective plastic discs that are inserted on the eye’s cornea to correct the wearer’s vision. They have the same function as eye-glasses.
Unlike eyeglasses, however, they are worn directly on the eye, are light-weight and almost invisible. Contact lenses are mostly used to correct blurry vision caused by far-sightedness, etc.
These are conditions in which images are not focused properly on the retina, therefore cannot be relayed clearly to the brain.
These lenses stick to the tear film that covers the front of...