why do we blink our eyes?

Answer 1

Our eyes are kept clean and moist by the tears. Blinking spreads the tears across the eye making sure that it is always wet. Tears are made from small lacrimal (pronounced as lack-ri-mal) glands present in the eye and they drain out from the nasolacrimal (pronounced as naso-lack-ri-mal) duct into the nose

Blinking protects our eyes from foreign objects, sweeps up dirt that gets in our eyes and lubricates our eyes by spreading tears across the surface. Don't you think that is a lot to accomplish in the “blink of an eye”?

Answer 2

Our eyes are kept clean and moist by the tears. Blinking spreads the tears across the eye making sure that it is always wet. Tears are made from small lacrimal (pronounced as lack-ri-mal) glands present in the eye and they drain out from the nasolacrimal (pronounced as naso-lack-ri-mal) duct into the nose.

The eyelids are folds of skin controlled by muscles that can expand and contract very rapidly. Between our eyelashes, just inside the rims of the eyelids are 20-30 sebaceous glands as well as tear glands. When we blink, these glands secrete lubricants that prevent the eyes from drying out. Each time the eyelids close, salty secretions from the tear glands sweep over the surface of the eye, flushing away small dust particles and lubricating the eyeball. Our eyelashes serve as dust catchers, because the reflex action of blinking automatically causes them to lower when exposed to some kind of foreign particles.

If you are in irritating conditions such as a smoke-filled room, you blink more frequently to keep the eyes clean and moist. You should also blink more often, even consciously, if you wear contact lens or sit before the computer screen for long periods of time.

Answer 3

Our eyes are kept clean and moist by the tears. Blinking spreads the tears across the eye making sure that it is always wet. Tears are made from small lacrimal (pronounced as lack-ri-mal) glands present in the eye and they drain out from the nasolacrimal (pronounced as naso-lack-ri-mal) duct into the nose

Blinking protects our eyes from foreign objects, sweeps up dirt that gets in our eyes and lubricates our eyes by spreading tears across the surface. Don't you think that is a lot to accomplish in the “blink of an eye”?

Answer 4

To keep our eyes moist. And when we blink liquid is all over our eyes. The eye mustn't be dry.

Answer 5

Usually I do when I see some beauty.We try to keep all foreign objects out by blinking and keep our eyes clean and moist.

Answer 6

Good question my friend .!Air has a number of dust and bacterial mass many of them are pathogen if they infect our eyes they will damage the eyes and can enter into the blood stream and this leads to the bacterimia and other diseases.so to prevent this we have an immune system that has non specific degradative enzyme called lysozyme .this enyme is also present in the tears and other bodily fluids so whenever the eye surface is occupied by these germs eye lid closes and that delivers the tears on the surface and finally death of bacteria.right ?

Answer 7

We blink our eyes due to the activity of centran nervous system..

Answer 8

Its simple. Our eyes must be wet. And when we blink liquid is all over our eyes. The eye mustn't be dry. When it needs to be wet you blink.

Answer 9

We blink our eyes to replenish the moisture level on our eye balls and also to remove any dusk particles that may have settled there.

Answer 10

Reflex action, and it also acts as winshield wipers to keep our eyeballs clear of dust and foreign particle which get into the eye.