Hiding Without Plain Sight - Third Ventricular Dilation and Optic Pathway Compression Without Disc Edema

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Identifier 20220213_nanos_posters_028
Title Hiding Without Plain Sight - Third Ventricular Dilation and Optic Pathway Compression Without Disc Edema
Creator Andrew Gross; Sahil Aggarwal; Brian White; Mays El-Dairi
Affiliation (AG) (SA) (BW) (ME) Duke University Eye Center, Durham, North Carolina
Subject High Intracranial Pressure/Headache; Visual Fields
Description Elevated intracranial pressure (ICP) is thought to cause vision loss mainly by axoplasmic stasis, a mechanical nonvascular phenomena, of the optic nerve.1 Dilation of the third ventricle is a rarely reported cause of visual pathway dysfunction in the literature.2-4 Mechanistically, the most common cause is a posterior fossa tumor causing increased ICP and subsequent dilation. Papilledema is typically present. Visual field cuts vary but are thought to be related to direct compression or relative chiasmal fixation: normal and postfixed often result in a bilateral depression of the inferior temporal central field due to superior pressure, while prefixed chiasm can result in bilateral central, nasal or superior hemianopic scotomas due to posterior inferior pressure.5 Regardless, indications for shunt placement or revision by neurosurgery rely on the presence of papilledema. We describe 5 cases of hydrocephalus with dilated third ventricle and vision loss without papilledema.
Date 2022-02
Language eng
Format application/pdf
Type Text
Source 2022 North American Neuro-Ophthalmology Society Annual Meeting
Relation is Part of NANOS Annual Meeting 2022: Poster Session I: Disorders of the Anterior Visual Pathway (Retina, Optic Nerve, and Chiasm)
Collection Neuro-ophthalmology Virtual Education Library: NOVEL http://NOVEL.utah.edu
Publisher Spencer S. Eccles Health Sciences Library, University of Utah
Holding Institution North American Neuro-Ophthalmology Association. NANOS Executive Office 5841 Cedar Lake Road, Suite 204, Minneapolis, MN 55416
Rights Management Copyright 2022. For further information regarding the rights to this collection, please visit: https://NOVEL.utah.edu/about/copyright
ARK ark:/87278/s6j6qagp
Context URL The NANOS Annual Meeting Neuro-Ophthalmology Collection: https://novel.utah.edu/collection/NAM/toc/
Setname ehsl_novel_nam
ID 2062703
Reference URL https://collections.lib.utah.edu/ark:/87278/s6j6qagp
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