Relating to an eyelid or the eyelids.

One of the thin plates of connective tissue resembling cartilage that form the framework of the eyelid.

The union of the eyelids at each end of the palpebral fissure (groove, opening).

The space between the eyelids extending from the outer to the inner canthus (either of the corners of the eye where the upper and lower eyelids meet).

A fold formed by the reflection of the conjunctiva from the eyelids unto the eye.

There are two folds, the superior (above) and the inferior (below).