Question

How many types of defects of vision are there? Write down their names.

Hint:

Myopia is corrected using a concave lens, while hypermetropia is corrected using a convex lens.

Answer 1

There are three main types of defects of vision:
1. Myopia (Nearsightedness) – The person can see nearby objects clearly but distant objects appear blurred.
2. Hypermetropia (Farsightedness) – The person can see distant objects clearly but nearby objects appear blurred.
3. Presbyopia – A defect occurring due to aging, making it difficult to focus on nearby objects.