Define lagophthalmos?

Lagophthalmos is a medical condition characterized by the inability to fully close the eyelids. It occurs when there is a partial or complete paralysis of the muscles responsible for eyelid closure. This condition can lead to various complications, including dryness, irritation, and damage to the cornea, which may result in vision problems or eye infections. Lagophthalmos can be caused by facial nerve palsy, trauma, or certain neurological disorders. Treatment options may include the use of lubricating eye drops, eyelid weights, or surgical interventions to correct the underlying cause or to protect the eye.