Spontaneous rotary nystagmus is rare, and its causes are likewise infrequent so far as neuropathologic entities of intracranial origin are concerned. A review of authoritative textbooks on ophthalmology1-5 reveals no case similar to the one described in this brief report. It was a striking finding, seen in the examination of a patient who had marked rotary nystagmus which occurred as he looked straight ahead, of entirely spontaneous origin. This was frequently observed a number of times daily by the patient and his physicians before operation. Because of the rarity of this clinical sign and its definite association in this case with a verified unilateral mass lesion of the posterior cranial fossa (cholesteatoma of the cerebellopontine angle), we considered it advisable to report it.
A 49-year-old white man was admitted to the Medical College of Virginia Hospital on Jan. 10, 1955. For 18 months previously he had noted slight deafness
MEREDITH JM, ADAMS RA. Spontaneous Rotary Nystagmus in Unilateral Cholesteatoma of the Cerebellopontine Angle. AMA Arch Ophthalmol. 1958;60(3):485-487. doi:10.1001/archopht.1958.00940080503022