Convergence

Update Item Information
Identifier Convergence
Title Convergence
Creator Olwen Murphy, MD; Daniel R. Gold, DO
Affiliation (OM) Department of Neurology, The Johns Hopkins School of Medicine, Baltimore, Maryland; (DRG) Departments of Neurology, Ophthalmology, Neurosurgery, Otolaryngology - Head & Neck Surgery, Emergency Medicine, and Medicine, The Johns Hopkins School of Medicine, Baltimore, Maryland
Subject Convergence
Description Convergence: instruct the patient to focus on their thumb held at arm's length, and slowly move their thumb towards their nose. This may bring out or cause reversal of vertical nystagmus (e.g., transition from upbeat to downbeat nystagmus in Wernicke's encephalopathy [see example of transition from DBN to UBN with convergence in brainstem encephalitis - https://collections.lib.utah.edu/ark:/87278/s6bg75c3]; see example of increased ocular flutter and UBN with convergence with a posterior fossa tumor - https://collections.lib.utah.edu/ark:/87278/s6867r9v), may exaggerate other acquired forms of nystagmus, and damp congenital/infantile nystagmus. If the patient complains of binocular symptoms or double vision while reading and near viewing and the patient has a near point of convergence >10 cm, think about convergence insufficiency (particularly with parkinsonism [https://collections.lib.utah.edu/details?id=1253803] or TBI/concussion).
Date 2022
Language eng
Format video/mp4
Type Image/MovingImage
Collection Neuro-Ophthalmology Virtual Education Library: Dan Gold Collection: https://novel.utah.edu/Gold/
Publisher North American Neuro-Ophthalmology Society
Holding Institution Spencer S. Eccles Health Sciences Library, University of Utah
Rights Management Copyright 2016. For further information regarding the rights to this collection, please visit: https://NOVEL.utah.edu/about/copyright
ARK ark:/87278/s6nbpwfr
File Name Convergence.mp4
Setname ehsl_novel_gold
ID 1757563
Reference URL https://collections.lib.utah.edu/ark:/87278/s6nbpwfr
Back to Search Results