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A mechanical theory to account for bitemporal hemianopia from chiasmal compression

McIlwaine, Gawn; Lueck, Christian; Crisp, T. Malcolm

Description

The association between bitemporal hemianopia and chiasmal compression is well recognized. The majority of chiasmal syndromes are caused by extrinsic compression from pituitary tumors, suprasellar meningiomas, craniopharyngiomas, and aneurysms. However, it is not clear why compressive lesions of the chiasm show a predilection for damage to nasal fibers with bitemporal hemianopia. Few experimental attempts at elucidating these mysteries have been reported and none has provided an adequate...[Show more]

dc.contributor.authorMcIlwaine, Gawn
dc.contributor.authorLueck, Christian
dc.contributor.authorCrisp, T. Malcolm
dc.date.accessioned2015-12-13T22:59:01Z
dc.identifier.issn1070-8022
dc.identifier.urihttp://hdl.handle.net/1885/83563
dc.description.abstractThe association between bitemporal hemianopia and chiasmal compression is well recognized. The majority of chiasmal syndromes are caused by extrinsic compression from pituitary tumors, suprasellar meningiomas, craniopharyngiomas, and aneurysms. However, it is not clear why compressive lesions of the chiasm show a predilection for damage to nasal fibers with bitemporal hemianopia. Few experimental attempts at elucidating these mysteries have been reported and none has provided an adequate explanation. The authors postulate that the susceptibility of nasal fibers to preferential damage is explained by structural collapse theories as applied to crossing and noncrossing cylinders. By constructing a simplified mathematical model, the authors demonstrate that nasal fibers are subject to relatively greater pressures for any given external compressive force acting on the chiasm.
dc.publisherLippincott Williams & Wilkins
dc.sourceJournal of Neuro-Ophthalmology
dc.subjectKeywords: brain artery aneurysm; compressive strength; craniopharyngioma; disease association; force; hemianopia; human; hypophysis tumor; mathematical model; meningioma; nerve compression; optic chiasm; pressure measurement; priority journal; review; syndrome deli
dc.titleA mechanical theory to account for bitemporal hemianopia from chiasmal compression
dc.typeJournal article
local.description.notesImported from ARIES
local.description.refereedYes
local.identifier.citationvolume25
dc.date.issued2005
local.identifier.absfor111303 - Vision Science
local.identifier.ariespublicationMigratedxPub11851
local.type.statusPublished Version
local.contributor.affiliationMcIlwaine, Gawn, Western General Hospital
local.contributor.affiliationLueck, Christian, College of Medicine, Biology and Environment, ANU
local.contributor.affiliationCrisp, T. Malcolm, Heriot-Watt University
local.description.embargo2037-12-31
local.bibliographicCitation.issue1
local.bibliographicCitation.startpage40
local.bibliographicCitation.lastpage43
local.identifier.doi10.1097/00041327-200503000-00011
dc.date.updated2015-12-12T07:25:56Z
local.identifier.scopusID2-s2.0-14844359630
CollectionsANU Research Publications

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