what is myopia or near sightedness ? what are the possible reasons of myopia ? How is myopia corrected ? Explain with diagram.
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Myopia is caused by the shape of the eye; either the eyeball is slightly too long or the cornea (the clear covering of the front of the eye) is too steeply curved. Myopia is corrected by spectacles or contact lenses with lenses which are 'minus' or concave in shape.
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