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Humans and other animals blink in order to protect the eye from foreign objects and to cleanse and moisten the eye by spreading tears over the eye's surface.

Blinking - Wikipedia

en.wikipedia.org/wiki/Blinking

A slow-motion example of a blinking human eye. Blinking is a semi-autonomic rapid closing of the eyelid. A single blink is determined by the .... Infants do not blink at the same rate of adults; in ...

Why Do We Blink So Frequently? | Science | Smithsonian

www.smithsonianmag.com/science-nature/why-do-we-blink-so-frequently-172334883/

Dec 24, 2012 ... Thus, blinking is physiological riddle. Why do we do it so darn often? In a paper published today in the Proceedings of the National Academy of ...

Why Do We Blink? - Live Science

www.livescience.com/32189-why-do-we-blink.html

Oct 24, 2012 ... We blink to clean, protect and moisten our eyeballs.

Why Do We Blink? - Health Guidance

www.healthguidance.org/entry/13956/1/Why-Do-We-Blink.html

Blinking is one of the body's unconscious processes that often go unnoticed by us during our day, especially as the average blink lasts only a tenth of a second.

The reason we blink? Most of the time it's so our brains can switch ...

www.dailymail.co.uk/health/article-2256175/The-reason-blink-Most-time-brains-switch-off.html

Jan 2, 2013 ... We don't just blink to keep our eyes lubricated - it's often because our ... we consider something we did last week, or imagine what we'll do ...

Why do humans blink their eyes? - Quora

www.quora.com/Why-do-humans-blink-their-eyes

Blinking in an involuntary muscle movement that exists to distribute the tear layer that coats the eye. We need this tear layer to lubricate the eye and it is also ...

How often and why do people's eyes blink? - The Boston Globe

archive.boston.com/news/science/articles/2007/05/14/how_often_and_why_do_peoples_eyes_blink/

May 14, 2007 ... A blink lasts about a 10th of a second, and most people blink about 15 times a minute, or every 4 seconds.

Why do we blink? | NBC News

www.nbcnews.com/id/3076704/t/why-do-we-blink/

Feb 25, 1999 ... We have to blink to cleanse and moisten the eye. Each time the eyelids close, salty secretions from the tear glands are swept over the surface ...

Why do we blink? | Go Ask Alice!

goaskalice.columbia.edu/answered-questions/why-do-we-blink

Jul 28, 2015 ... When the eyelids close over the eyes (as they do about ten to fifteen ... protection — this is why people blink when something startles them or ...