Why is it necessary to change CONTACT LENSES(annual) after 1year?

Question

-what will happen if it is not changed?

-specialist opinion preffered.

-does it affect the eye?

Answer 1

if it is not, then you might have a n 80 percent chance of having some eye diseases.

yes it does effect the eyes, and since there is a lot of bacteria and dust covered in the lense, over the course of an year, u have to change it

hope it helps