Identifier |
20200308_nanos_posters_154 |
Title |
Hemi-Cloverleaf Pattern on Static Perimetry as an Indicator of Posterior Cortical Atrophy |
Creator |
Carolyne Riehle; Philip Skidd; John Steele Taylor |
Affiliation |
(CR) (JST) Larner College of Medicine, University of Vermont, Department of Neurology, Burlington, Vermont; (PS) Larner College of Medicine, University of Vermont, Division of Ophthalmology, Burlington, Vermont |
Subject |
Visual Fields; Higher Visual Cortical Functions; Perimetry; Miscellaneous |
Description |
Posterior cortical atrophy (PCA) is a rare, progressive, degenerative disease that initially manifests with visual dysfunction. Since its description over thirty years ago, debate remains over whether this is a variant of Alzheimer disease or a distinct entity, with pathology similar to Alzheimer's. Initially characterized by progressive impairment in many aspects of cortical visual function, in the early stages there is relative sparing of memory and executive function. Patients commonly present with non-descript visual complaints, often resulting in delayed diagnosis. On automated (Humphrey) visual field testing a majority demonstrate some degree of homonymous deficiency. The cloverleaf pattern on automated (Humphrey) visual fields is recognized as artifact of non-physiologic vision loss or visual inattention. This artifact results from the algorithm commonly used in static perimetry. We report a similar pattern where the affected field demonstrates a superimposed hemi-cloverleaf pattern from patients affected by PCA. |
Date |
2020-03 |
Language |
eng |
Format |
application/pdf |
Type |
Text |
Source |
2020 North American Neuro-Ophthalmology Society Annual Meeting |
Relation is Part of |
NANOS Annual Meeting 2020: Poster Session I: Clinical Highlights |
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 2020. For further information regarding the rights to this collection, please visit: https://NOVEL.utah.edu/about/copyright |
ARK |
ark:/87278/s66f12qg |
Context URL |
The NANOS Annual Meeting Neuro-Ophthalmology Collection: https://novel.utah.edu/collection/NAM/toc/ |
Setname |
ehsl_novel_nam |
ID |
1539381 |
Reference URL |
https://collections.lib.utah.edu/ark:/87278/s66f12qg |