Eyelid

A multi-layered structure which both protects the cornea and produces meibomian secretions – a component of the tear film. Any distortion of the eyelid can cause ocular discomfort, and may require surgical correction. The function of the eyelid is also dependent on normal innervation by the facial nerve, hence the laxity of the lower eyelid which can occur after complete or partial paralysis (for example Bell’s palsy).