Complete ptosis, where the pupil is covered by the lid, is unlikely to be due to which of the following conditions?

A: Myasthenia gravis

B: Oculomotor nerve palsy

C: Horner’s syndrome

D: Congenital ptosis

Horner’s syndrome typically causes a mild ptosis due to the involvement of Müller’s muscle, which is innervated by the sympathetic nervous system. This mild ptosis is usually not severe enough to completely cover the pupil. In contrast, conditions like oculomotor nerve palsy can cause a more pronounced ptosis, where the eyelid may cover the pupil entirely.

Complete ptosis, where the pupil is covered by the lid, is unlikely to be due to which of the following conditions?

Complete ptosis, where the pupil is covered by the lid, is unlikely to be due to which of the following conditions?

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