Hypermetropia, often known as long-sightedness, is a condition in which a person is unable to see clearly adjacent things. A convex lens can be used to remedy the problem. The ray diagram is as follows:

a) The image of a close object is produced behind the retina in the hypermetropic eye.

b) The hypermetropic eye’s near point is N’, which is farther away than the usual near point.

c) Hypermetropia is treated using a convex lens that forms the virtual picture at the near point N’