Question

State the main function of tears.

Answer 1

Tears:

1. Tears keep your eyes moist and smooth, as well as help light focus so you can see clearly.
2. They also safeguard your eyes against diseases and irritants such as dirt and dust.
3. A thin layer of tears termed a "tear film" spreads across the surface of your cornea every time you blink (the clear outer layer of the eye).