PTOSIS

Abnormal down of the upper eyelid due to damage of the third brain nerve.

Types:

Acquired ptosis: this includes ptosis which occur in the elderly, as a consequence of neurological disease or CNS diseases (eg myasthenia gravis), as a result of central bleeding (eg diabetics).

Acquired ptosis also includes ptosis caused by trauma, due to damage to n. occulomotorius or due to direct damage to the optic setter.

Traumatic ptosis: may occur after cataract surgery.