Question

6.
7.
Write a use of bifocal lens​

Answer 1

Answer:

They're prescription glasses that correct for problems with distance and close-up vision. The top part of the lens is for distance. ... Even people who wear contact lenses to correct their distance vision may need a pair of bifocals for when they are not wearing their contacts

Answer 2

Answer:

Uses of bifocal lens are:-

Bifocals are multifocal lenses.

They're prescription glasses that correct for problems with distance and close-up vision. The top part of the lens is for distance. ... Even people who wear contact lenses to correct their distance vision may need a pair of bifocals for when they are not wearing their contacts

Thankyou.......