Presbyopia arises due to the gradual weakening of the ciliary muscles and diminishing flexibility of the eye lens.

Presbyopia is a defect where the near point gradually recedes as the power of accommodation decreases with age. People find it difficult to see nearby objects comfortably and distinctly without corrective eye-glasses.

Hypermetropia can be corrected by using a convex lens of appropriate power. Eye-glasses with converging lenses provide the additional focusing power required to form the image on the retina.

Hypermetropia can arise either because (i) the focal length of the eye lens is too long or (ii) the eyeball has become too small.

For a person with hypermetropia, the near point is farther away from the normal near point (25 cm). Reading material must be kept much beyond 25 cm for comfortable reading.