What is long sightedness? What is the condition of the eye in this case? How can it be rectified?

Explanation

Hypermetropia (long sightedness): the affected person can see only the distant objects clearly but not the obejcts neary. This condition results due to a shortened eyeball and thin lens, so the image of closest object is converged behind the retina. This defect can be overcome by using convex lens that converge the entering light rays on the regina.