Do cats really have three eyelids?

Answer 1

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.

Answer 2

Cats do have a third eyelid, which is used to help protect the eye from harm and keep it moist.

Answer 3

One of the functions of the cats third eyelid is to protect there eyes from dirt, sand and injury.