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  Peripheral homonymous hemianopia: Correlation between lesion location and visual field defects by means of cytoarchitectonic probabilistic maps

Papgeorgiou, E., Ticini, L. F., & Schiefer, U. (2012). Peripheral homonymous hemianopia: Correlation between lesion location and visual field defects by means of cytoarchitectonic probabilistic maps. Journal of Neuro-Ophthalmology, 32(1), 5-12. doi:10.1097/WNO.0b013e31821fc0e9.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0012-0759-5 Version Permalink: http://hdl.handle.net/21.11116/0000-0003-CE18-B
Genre: Journal Article

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Papageorgiou_JNeurOft_2011.pdf (Preprint), 2MB
 
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Papgeorgiou, Elena1, Author
Ticini, Luca Francesco2, Author              
Schiefer, Ulrich1, Author
Affiliations:
1Institute for Ophthalmic Research, Eberhard Karls University Tübingen, Germany, ou_persistent22              
2Max Planck Research Group Body and Self, MPI for Human Cognitive and Brain Sciences, Max Planck Society, Leipzig, DE, ou_634554              

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 Abstract: Background: Peripheral homonymous scotomas beyond 30[degrees] from fixation are rare. The paucity of publications describing such visual field defects might be attributed to various factors, including the absence of severe symptoms, routine visual field assessment restricted to the central 30[degrees] with automated perimetry, and the collateral circulation to the occipital cortex. The aim of this study was to correlate the brain lesions and perimetric findings in 2 unusual cases of peripheral homonymous scotomas, with the anatomic location of the optic radiation and primary visual cortex. Methods: Two patients with circumscribed homonymous scotomas beyond 30[degrees] related to infarcts in the intermediate area of the visual cortex are reported. We describe a new strategy, which relies on modern lesion analysis and stereotaxic probabilistic cytoarchitectonic maps, to accurately correlate the brain lesion site with the location of the peripheral homonymous visual field defects. Results: In Case 1, the posterior optic radiation was affected in its termination in the upper intermediate visual cortex. In Case 2, the lesion was located in the upper rostral portion of the primary visual cortex. In both, the most anterior part of the visual cortex and the occipital pole were intact, accounting for preservation of the central and most peripheral visual field. Additionally, correlation of the neuroimaging findings with commonly used maps of the representation of the visual field on the striate cortex suggested that our data were most consistent with the Holmes map. Conclusions: Modern lesion analysis and cytoarchitectonic maps, in combination with the existing retinotopic maps, may provide reliable clues for the localization of cerebral infarction and prognosis of homonymous visual field defects and may lead to a better understanding of the link between neuroanatomical landmarks and functional outcomes.

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Language(s): eng - English
 Dates: 20112012-03-01
 Publication Status: Published in print
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 Rev. Type: Peer
 Identifiers: DOI: 10.1097/WNO.0b013e31821fc0e9
PMID: 21623227
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Title: Journal of Neuro-Ophthalmology
  Abbreviation : J Neuroophthalmol
Source Genre: Journal
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Publ. Info: Hagerstown, MD : Lippincott Williams & Wilkins
Pages: - Volume / Issue: 32 (1) Sequence Number: - Start / End Page: 5 - 12 Identifier: ISSN: 1070-8022
CoNE: https://pure.mpg.de/cone/journals/resource/1070-8022