QOTD - The defect of the human eye in which a person can see the near objects clearly but, finds difficulty in the clear identification of far objects is-


2019-08-18 | Team PendulumEdu

Options:

A. Hypermetropia

B. Presbyopia

C. Myopia

D. Astigmatism

Solution:

Hypermetropia or Hyperopia is also known as long-sightedness, is a defect of the human eye in which far objects can be seen clearly while nearby objects are not visible clearly. This is because of the image of nearby object forms beyond the retina. It can be corrected using a convex lens.

Presbyopia is the defect of the human eye usually found in old age group people. The lens of the eye loses its flexibility due to which near as well as far objects appear blurred. It can be corrected using the bifocal lens.

Myopia also referred to as short-sightedness is a defect of the human eye in which a person can see the near objects clearly, but finds the far placed objects are not visible clearly. In this condition, the image of far objects is formed too forward from the retina. It can be corrected using a concave lens.

Astigmatism is the defect of the human eye which occurs when the surface of the cornea or lens is not spherical, due to this one plane of an object appear in focus while those in other are out of focus. It can be corrected using a cylindrical lens.

Hence, C is the correct answer.

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