5. What is hypermetropia (far-sightedness)? Write two
causes for the development of this defect. Explain
how it can be corrected using a lens.
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Hypermetropia or long sightedness : It is the defect of human eye in which a person can see clearly objects at large distances from it. but cannot see nearby objects clearly. Correction : It is corrected by using spectacles having convex lens, which converges and shifts the image to retina from beyond
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