Some brief information about a glance
Some brief information about a glance
Blinking is an involuntary bodily function that ensures the eyes are kept moist while in the eye sockets, as well as to keep any foreign bodies from damaging the eye's surface.
When closed, the eyelid forms a suction film over the entire eyeball to prevent it from drying out.
Note - in many zombie movies and books, zombies often have opaque white eyes, this is because these zombies don't blink and their opaque white color represents millions of tiny scratches.
The average person blinks about 11,500 times a day or about 4.2 million times a year.
While blinking lasts only a fraction of a second, when it all comes together, these fractions take up thirty minutes when you close your eyes every day - 182 and a half hours a year!
The muscles that control the blink of the eye are called the oculi orbicularis muscle and the levatorpalpebraesuperioris muscle.
Orbicularis oculi close the eye, while the wrist muscle contraction opens the eye.
These muscles are the fastest moving muscles in the human body!
Various studies have been performed on the frequency of blinking in adults under different circumstances.
One such scenario is that of Air Force pilots in a simulated flight flying over the territory of your own or enemy troops.
This suggests that people blink more when they get less information as Air Force pilots blink less when on enemy territory.
The majority of blinking animals resemble humans, but sharks, some reptiles and blinking birds use the Nictitating Membrane.
This is a transparent or translucent third eyelid that slides across the eye to keep the eyes moist while maintaining maximum vision.
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