Q. Why do we blink our eyes?
Ans. Blinking helps in lubricating and cleansing of eyes. Every time we blink our eyes, the tear glands secrete the mucous that gets spread all over the surface of eyes. This not only helps in moistening the eyes, but also flushes out the dust particles. Blinking also helps to keep the eyes safe from the damaging stimuli like bright light and other foreign irritants.