Lubricants: Medications that keep eyes moist, mimicking natural tears.

People must blink their eyes because our eyes have to stay moist to work and blinking spreads water across your eye so it keeps the eye moist.

To keep your eyes from drying out. Dry eyes can cause your eyes to be bloodshot!!!!

To keep your eyes moist so that you can see :)

The Tokay gecko species, has no eyelids. Because of this, the eyeball must consistently be licked, to keep moistened and improve vision.