Question

What is presbyopia ? What is its cause ? How it can b3 corrected?

Answer 1

Presbyopia is caused by a hardening of the lens of your eye, which occurs with aging. As your lens becomes less flexible, it can no longer change shape to focus on close-up images. As aresult, these images appear out of focus.

Answer 2

Presbyopia is improper functioning of eye lens due to aging. It can be treated using bifocal lens which contains concave in upper portion and convex in lower portion for reading purposes.