Why do we blink?
Blinking is a normal reflex that protects the eye from dryness, bright light, and fingers or other objects coming towards it. Blinking also regulates tears, which nourish and cleanse the surface of the eye The blinking rate in newborns is only 2 times per minute. This increases to 14-17 times per minute in adolescence and remains at this rate through the remainder of life. Blinking can also increase in response to pain, bright light, changes in temperature and humidity, and conversation