Idiopathic Downbeat Nystagmus, Decreasing with Convergence
Creator
Daniel R. Gold, DO
Affiliation
(DRG) Departments of Neurology, Ophthalmology, Neurosurgery, Otolaryngology - Head & Neck Surgery, Emergency Medicine, and Medicine, The Johns Hopkins School of Medicine, Baltimore, Maryland
This is a 25-yo-woman who experienced vertically oscillopsia for 1 year, and was found to have downbeat nystagmus. Interestingly, there were no other cerebellar ocular motor signs - e.g., normal saccades, smooth pursuit, VOR suppression, and no gaze-evoked nystagmus, although her (pure) downbeat was more prominent in right and left gaze. There was no appendicular ataxia and neurologic examination was otherwise normal. With convergence, her downbeat actually decreased (will usually increase with most downbeat nystagmus/cerebellar syndromes), and base out prism improved her oscillopsia mildly. Neuroimaging and work-up for paraneoplastic, toxic/metabolic, autoimmune/rheumatologic syndromes in addition to common spinocerebellar ataxias was unrevealing. Her examination was completely unchanged at 3 years. Number of Figures and legend for each: 0 Number of Videos and legend for each: 1, Patient with downbeat nystagmus, improved with convergence
Date
2016
Language
eng
Format
video/mp4
Type
Image/MovingImage
Collection
Neuro-Ophthalmology Virtual Education Library: Dan Gold Neuro-Ophthalmology Collection: https://novel.utah.edu/Gold/
Publisher
North American Neuro-Ophthalmology Society
Holding Institution
Spencer S. Eccles Health Sciences Library, University of Utah, 10 N 1900 E SLC, UT 84112-5890