Visual Agnosia and Prosopagnosia With or Without Achromatopsia? Case Report

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Identifier 20080311_nanos_posters_035.pdf
Title Visual Agnosia and Prosopagnosia With or Without Achromatopsia? Case Report
Creator Joao Costa; Helena Hurbano; Ana Mendonsca
Affiliation Egas Moniz Hospital, Lisbon, Portugal
Subject Agnosia; Prosopagnosia; Achromatopsia; Visual; Cortex
Description Visual stimulus coming to the primary visual cortex are processed by adjacent areas and thought inter-hemispheric pathways to allow the visual perception of objects and forms as well as recognition of faces and colours. We present a patient with a bilateral asymmetrical occipital infarct whose visual acuity and visual fields should allow him to recognise objects but he only could do that using another sense like touch or earring - visual agnosia. When faced with a mirror he could not recognise himself- prosopagnosia. All the colours presented to him were said to brown- central achromatopsia. We describe the strategy used that allowed us to distinguish that this was not a real achromatopsia but rather the result of visual agnosia. Syndromes of pure visual miss perception are rare, always coming from bilateral cortical lesions and the general ophthalmologist should be aware of its existence not to be called a functional problem.
Date 2008-03-11
Language eng
Format application/pdf
Type Text
Source 2008 North American Neuro-Ophthalmology Society Annual Meeting
Relation is Part of NANOS 2008: Poster Presentations
Collection Neuro-Ophthalmology Virtual Education Library: NANOS Annual Meeting Collection: https://novel.utah.edu/collection/nanos-annual-meeting-collection/
Publisher North American Neuro-Ophthalmology Society
Holding Institution Spencer S. Eccles Health Sciences Library, University of Utah
Rights Management Copyright 2010. For further information regarding the rights to this collection, please visit: https://NOVEL.utah.edu/about/copyright
ARK ark:/87278/s6h73n5t
Setname ehsl_novel_nam
ID 180861
Reference URL https://collections.lib.utah.edu/ark:/87278/s6h73n5t
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