What Causes Unilateral Ptosis

Unilateral ptosis can be the result of weakness of the Müller muscle, which is innervated by the sympathetic nervous system (Horner syndrome) or the levator palpebrae superioris muscle, which is supplied by cranial nerve III (ie, the oculomotor nerve

How do you fix unilateral ptosis?

Ptosis surgery is the only effective method of treatment for severe ptosis that has been present from birth or caused by injury. During this procedure, a surgeon makes a small incision to access and tighten the levator muscle, allowing the patient to then open their eyelid to a more normal height.

What causes acquired ptosis?

Acquired ptosis can be caused by neurologic conditions that affect the nerves and/or muscles of the eye. These include myasthenia gravis, progressive external ophthalmoplegia, Horner syndrome, and third cranial nerve palsy. The ptosis may be combined with an eye movement disorder with resultant double vision.