Eyelid vs. Tylosis — What's the Difference?

An eyelid is a thin fold of skin that covers and protects an eye. The levator palpebrae superioris muscle retracts the eyelid, exposing the cornea to the outside, giving vision.

See callosity.

Either of two folds of skin and muscle that can be closed over the exposed portion of the eyeball.

See tylose.

A thin skin membrane that covers and moves over an eye.

A thickening of the skin, especially of the eyelids

The cover of the eye; that portion of movable skin with which an animal covers or uncovers the eyeball at pleasure.

A balloonlike growth in a plant cavity; a tylose

Either of two folds of skin that can be moved to cover or open the eye;

An intrusion of one vegetable cell into the cavity of another, sometimes forming there an irregular mass of cells.