A member asked:

What does it mean to have a third eyelid?

A doctor has provided 1 answer

Some animals: Have this membrane that closes before the lids. Humans do not have these.

Answered 1/31/2013

5.3k views

Thank

Related Questions

A member asked:

What does it mean if my eyebrow/eyelid droops periodically?

A doctor has provided 1 answer

A member asked:

What does it mean when the inner part of your eyelids are purple?

3 doctors weighed in across 2 answers

A member asked:

What dose it mean when you have itchy eyelids and flakes all day ?

A doctor has provided 1 answer