Question

what are the two types of eye defect ? give the method by which these defect can be rectified​

Answer 1

Explanation:

Defects of Vision and their Correction

1 Defects of vision and their correction.

2 Myopia (Short-sightedness or Near-sightedness)

3 (1) Due to high converging power of eye-lens (because of its short focal length)

4 (2) Due to eye-ball being too long.

5 Myopia (short-sightedness or near-sightedness) is corrected by using spectacles containing concave lenses.

Answer 2

Answer:

The ability to see is called vision. It is also called eyesight. ... These defects of vision can be corrected by using suitable spherical lenses (convex lenses or concave lenses). These lenses are usually used in the form of eye-glasses or spectacles.