Question

Class X
Can a person's near and far point be the same in case of myopia or hypermetropia?
Explain in detail.

Answer 1

Far Point: For healthy eye it's at infinity (∞) but for myopic eye < infinity.

Near Point: For healthy eye 25 cm but for hypermetropic eye > 25 cm.

Coming on to the question

• In case of Myopia, far point is less than ∞ hence it can be 25 cm even which is the near point for eye.

• In case of hypermetropia, near point is more than 25 cm which most probably not stretch till infinity but when conditions reaches to close to something so called blindness then your near point can be the far point.

Answer 2

$\huge\underline\purple{\sf Answer:}$

❇The persons near and far point can't be same in case of myopia and hypermetropia.

❇Both are different as the position of images formed are different.

❇For a normal vision The near point is

-25.cm and far point is infinite.

Myopia ::

❇It is also called as near sightedness.

❇It can be corrected by using concave lens (Diverging lens).

❇The defect arises due to the image from the distant object falls in front of the retina.

❇The far point of myopic eye is 70 cm.

Hypermetropia ::

❇It is also called as far sightedness.

❇It can be corrected by using convex lens (Converging)

❇This defect arises when a light from distant object falls behind the retina.

❇The power of convex lens used is 3.0 diopters.

$\huge\underline\blue{\sf Thank you }$