Windmill nystagmus in a patient with subacute visual loss
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Windmill nystagmus is characterized by a clock-like rotation of the direction of nystagmus . Even though various patterns of variant windmill nystagmus have been described [2, 3], the typical pattern of windmill nystagmus has only once been described in a patient with acquired blindness . We report another case of windmill nystagmus that was observed only 3 months after visual loss.
A 47-year-old man was referred for further evaluation of progressive visual loss in both eyes for 3 months. Under the suspicion of atypical optic neuritis, intravenous methylprednisolone, 1 g per day, had been administered for 10 days in another hospital, but his visual acuity had deteriorated.
On examination, he was not able to perceive light in the left eye, and only able to count fingers at 50 cm in the right eye. Both pupils were measured at 5 mm and hardly responded to light or near stimuli. Optic discs were pale in both eyes (Fig. 1a). Video-oculography documented intermittent...
KeywordsVertigo Nystagmus Blindness
This study was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (no. NRF-2016R1D1A1B04935568).
Compliance with ethical standards
Conflicts of interest
Drs. S.U. Lee, S.Y. Jo, H.J. Kim, and J.Y. Choi report no disclosures. Dr. J.S. Kim serves as an associate editor of Frontiers in Neuro-otology and on the editorial boards of the Journal of Clinical Neurology, Frontiers in Neuro-ophthalmology, Journal of Neuro-ophthalmology, Journal of Vestibular Research, Journal of Neurology, and Medicine.
This study followed the tenets of the Declaration of Helsinki, and was performed according to the guidelines of Institutional Review Board of Seoul National University Bundang Hospital (B-1803-459-702).
The patient shows windmill nystagmus that alternates its direction in the horizontal and vertical planes (WMV 9052 KB)
- 1.Sanders M, Glaser J (1973) Alternating windmill nystagmus. Neuro-Ophthalmol 7:133–136Google Scholar