What are the hazards of ptosis?

(1) trauma damage to the oculomotor nerve or levator palpebral muscle, Müller muscle, can cause traumatic ptosis.

(2) the disease of the eyelid itself, such as severe trachoma, eyelid tumors, making the weight of the eyelids caused by mechanical ptosis.

(3) no eyeballs, small eyeballs, atrophy of the eye and a variety of reasons leading to decreased orbital fat or orbital content, can cause false ptosis.