This is modeled after a case presented at the University of Iowa Department of Ophthalmology. This gentleman presents with diplopia. The abnormalities are mostly with vertical gaze, especially upgaze; the patient prefers a downward gaze. He may have some upbeat or downbeat primary position nystagmus as well as trouble with convergence and divergence. There is also some bilateral upper eyelid retraction on exam. MRI of the brain shows hydrocephalus.
Challenge: This tough constellation of symptoms makes up what syndrome?
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