The eye needs to be wet thus making the eyelid to blink to put more fluids for it to work well.
a rapid movement of the eyelid to moisture the surface of the eye.
The eyelid is the skin that covers your eye when you blink and your eyelashes are on the end.
You are employing a reflex action that requires you not to make a conscience decision. To keep your hand on the hot stove, you would need to make a decision to keep it there, ignoring the pain. Another reflex action is to blink if someone tries to poke you in the eye. Even if you know that the poke will not actually touch your eye, reflex causes you to blink.
Light travels at a speed of approximately 299,792 kilometers per second (about 186,282 miles per second). A typical blink of an eye lasts about 100 to 400 milliseconds. During this brief period, light can travel roughly 30 to 120 kilometers (about 18 to 75 miles), depending on the duration of the blink.
Fish do not have eyelids like humans do, so they cannot blink in the same way. However, some fish have a nictitating membrane that can cover their eyes for protection. This membrane acts like a thin, transparent eyelid and helps keep the eye moist.
your eyes get dry mostly so it causes you to blink.
Psalty Sing-a-longs
The mucus and debris that's normally washed away by tears when you blink starts to collect in the corners of your eyes. This causes you to wake up with eye boogers.
you must blink your eyes so water in your eye will come and keep the eye from drying
Blink of an Eye - 1999 is rated/received certificates of: USA:R
I didn't see the cream pie coming; it happened in the blink of an eye. This means it happened instantly.
The cast of Blink of an Eye - 2002 includes: Emma Hoyle as Laura
Cats and dogs blink with both eyes, though sometimes if they wanted to for any reason they can blink with one eye only and leave the other eye open, which is called a wink.
In the Blink of an Eye - 2009 V is rated/received certificates of: Netherlands:12
Three - 1998 Blink of an Eye was released on: USA: 16 February 1998
The same thing that causes you to blink constantly. Their eyes are dry and they are keeping them moist.
because she has a lazy eye