A person is unable to see distant object within 50 cm from his two possible causes
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A person is unable to see distant object within 50cm he is suffering from hypermetropia.
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hypermetropia is caused when image of nearby objects is formed behind the retina. this may be due to flattening of eye ball or less curvature of cornea. this defect may be corrected by convex lens. presbiopia is caused due to weakening of cilary muscles.
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