Why do we blink?

Answer:
Blinking is the rapid closing and opening of the eyelid. It is an essential function of the eye that helps spread tears across and remove irritants from the surface of the cornea and conjunctiva. On average, a blink takes approximately 300 to 400 milliseconds.

More.

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i dont know why do we blink

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to clean our eyes (:

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it helps to lubricate the eyeball

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prevents dry eyes

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To lubricate our eyes so they dont dry up. also its to protect from foreign objects getting inside the eye.

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to spread tears over the eyes surface so it don't dry out

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if we didnt our eyes would get very sore

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Every time you blink it moistens your eyes and keeps them free of dust etc. The eyes are naturally moist anyway so need to be prevented from drying out.

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To stop dirt getting in your eyes

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To stop us seeing all the fairies and pixies around us.they only appear when we blink!

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It keeps the cornea moist,
without moisture, the body would deposit a layer of protein (like on the skin) over the dried surface, which would scar the cornea, or make it relatively opaque

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To keep are eyes moist, and also to clean them

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To rinse the eyes with fluid to prevent them from drying up.

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To spread moisture over the eye, move debris to the corners for removal and prevent the entry of foreign matter. (The eyelashes cause you to close your eyes if flying sand hits them.)

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when you blink you 'refresh' the eye, and this is an involuntary movement

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mmm Good question let me think ... yes I think that is only for lubricate our eyes, well try to no blink about ehhmm ... 20 seconds, you will see that is not very nice jaja

Love, "the prettiest teen she-devil" Ailin

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to keep our eyes from drying out and to prevent foreign objects entering and irritating the eyes

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hiya we blink cos it cleans and moistens the eyeball x

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