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From: "::darkshadows::" <bat@cave.org>
Newsgroups: alt.fan.rolex
Subject: Why do we blink our eyes?
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Date: Sun, 03 May 2009 00:15:38 -0500
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Why do we blink our eyes?
To oil, lube, and filter the eyes.
Blinking, as opposed to batting, our eyes automatically supplies two
forms of moisture to our eyes, to keep them from drying out, and to
keep foreign matter from entering and irritating our eyes. Eyelids
themselves, our built-in "wind-shield wipers," are merely folds of
skin, controlled by muscles capable of expanding and contracting so
rapidly, that blinking does not impair our vision. Mother Nature lined
the rims of our eyelids with 20-30 sebaceous, oil-producing glands,
which are located between our eyelashes, and are invisible to the
naked eye. Blinking automatically coats the eyelid and eyelashes with
the lubricant it secretes, to prevent them from drying out.
Blinking also protects the eye from dryness by irrigating, not by
irritating, the eye, The eyelid, through suction, automatically draws
the fluid we cry with from the well we refer to as the tear duct over
the eyeball, to irrigate, and to moisturize the eye. The process is
similar to the manner in which the farmer uses water to irrigate his
crops during a dry spell.
Yet another benefit of blinking, is to shield the eye from foreign
bodies. Our eyelashes, short, curved, hairs, attached to the eyelids,
serve as dust-catchers, as the blinking reflex causes them
automatically to lower, when exposed to harsh elements. Nature endowed
the camel with extraordinarily long, curly, eyelashes, to protect his
eyes from sudden sandstorms in the desert. Incidentally, the "camel
eyelash" look is one many women attempt to duplicate by using an
eyelash curler! Eyebrows, by the way, also serve their purpose, as
they catch the run-off perspiration produces.
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