"Pseudonystagmus" due to bilateral vestibular loss and head tremor

Update item information
Identifier Pseudonystagmus_BVL
Title "Pseudonystagmus" due to bilateral vestibular loss and head tremor
Subject Abnormal VOR HIT
Creator Daniel R. Gold, DO, Departments of Neurology, Ophthalmology, Neurosurgery, Otolaryngology - Head & Neck Surgery, Emergency Medicine, and Medicine, The Johns Hopkins School of Medicine
Description This is a 65-yo-woman with complaints of imbalance, dizziness, and horizontal oscillopsia. On exam, she had a high frequency, low amplitude (mainly horizontal) head tremor, and with ophthalmoscopy, the optic nerve was clearly oscillating back and forth at the same frequency as her head tremor, which was responsible for her horizontal oscillopsia. In her case, she also had bilateral vestibular loss demonstrated by + head impulse testing in the planes of right and left horizontal canals (also in anterior and posterior canals, not seen in this video). If a patient with a head tremor has an impaired or absent vestibulo-ocular reflex (VOR), the eyes will move with the head with each head oscillation, and oscillopsia will result. The term "pseudonystagmus" has been used to indicate oscillopsia (not due to nystagmus) that results from bilateral vestibular loss and head tremor.
Publisher Spencer S. Eccles Health Sciences Library, University of Utah
Date 2017
Format video/mp4
Rights Management Copyright 2017. For further information regarding the rights to this collection, please visit: https://NOVEL.utah.edu/about/copyright
Collection Neuro-ophthalmology Virtual Education Library: NOVEL http://NOVEL.utah.edu
Language eng
ARK ark:/87278/s62z4z8g
Setname ehsl_novel_gold
Date Created 2017-06-22
Date Modified 2018-12-21
ID 1253807
Reference URL https://collections.lib.utah.edu/ark:/87278/s62z4z8g