0
The eyelids act to protect the anterior surface of the globe from local injury. Additionally, they aid
in regulation of light reaching the eye; in tear film maintenance, by distributing the protective and
optically important tear film over the cornea during blinking; and in tear flow, by their pumping action on the conjunctival sac and lacrimal sac.
The third eyelid which is seem in some animals and birds is called the nictitating membrane or haw as it is called, closes across the eye (unlike the upper and lower eyelids) and are there as extra protection for that all important eye.
It is a transparent or translucent third eyelid present in some animals that can be drawn across the eye for protection and to moisten it while maintaining vision.
Wiki User
∙ 6y ago
Add your answer:
Earn +20 pts
Do cats have more than one pair of eyelids?
Yes. Cats have three eyelids.
How many eye lids do cats have?
Three. They have the upper and lower lids, similar to humans. They also have a third membrane that acts as an eyelid, so to speak. The third "eyelid" moves from the outside edge to the inside edge.
How many eyelids do dogs have?
Dogs actually have 3 eyelids.
Why do cats sigh?
cats sigh more than humans because of the small eyelids of theirs.
What animals have three eyelids?
Most likely for protection for their eyes, some tend to be delicate.
How many pairs of eyelids do ducks have?
they have three eyelids i read in a real book about ducks
How many eyelids do sharks have?
Three
How many eyelids does a frog have?
three
Why do cats lick your eyelids?
It's because they are crazy about you, and they are crazy, and that's their thing to do to you.
What can you do for an outdoor cat whose third eyelids are suddenly visible?
You don't need to do anything; cats move their third eyelids in and out of view, so there's nothing wrong with your cat.
How many eyelids do owls have for both eyes?
Three
Which animal has three eyelids for the purpose of protection?
camel
