Question

Hey guys.....
What is presbyopia? Can you explain me very well....

Answer 1

Answer:

Press biopia is an eye problem mainly in old age people.

When eye lens become weak so it's focal length can not change so for treatment press biopic eye should wear hi focal glasses

Answer 2

Answer:

presbyopia means having near sightedless and far sidedness

Explanation:

in this both concave and convex lens are used