CONJUNCTIVA ANATOMYThe interior surface of the eyelids and the anterior surface of the eyeball is lined with a thin membrane which secrete mucous. This membrane is known as the conjunctiva. The stratified squamous epithelium that makes up the conjunctiva varies greatly in density in various regions along the eye.
Adhering to the tarsal plate of the eyelid, the thickest section of this membrane is known as the palpebral conjunctiva. The bulbar conjunctiva is discernable by its reflection on the anterior portion of the eyeball.
The bulbar conjunctiva is extremely thin in the areas which covers the cornea, and in fact is considered to be transparent in its entirety.
The conjunctiva is one single continuation from the eyelids to the anterior of the eyeball, and thus there is a small area known as the conjunctival sac that may be noted when the eyes are closed.
Its main purpose is to protect the eyeball from damage in the event a foreign particle attempts entry. However, the conjunctiva itself can heal rapidly if it becomes scratched or abraded.