Question

How is the eye defect of old person different from nearsightedness and farsightedness?

Answer 1

Due to Being Older in Age The Ciliary Muscles Od patients gets Shrink or Contract Which cause Blurness vision known as knowns Eye defect which may be Myopia...Hypropia...and Astigmatism

Answer 2

Eye defect of old persons is called 'Presbyopia '

It is different because it is a combination of nearsightedness (Myopia) and farsightedness (Hypermetropia).

This eye defect can be corrected by using bifocal lens.