Functional MRI as a tool for assessing chiasmal visual defect in a patient with neuromyelitis optica
Bitemporal haemianopsia is the classic visual field defect of disorders that involve the optic chiasm, caused by the involvement of the crossing nasal-retinal fibres of each optic nerve. The cortical consequence of chiasmal abnormalities had previously been limited to congenital abnormalities as in...
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Published in | Journal of neurology, neurosurgery and psychiatry Vol. 81; no. 10; pp. 1174 - 1175 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
England
BMJ Publishing Group Ltd
01.10.2010
BMJ Publishing Group LTD |
Subjects | |
Online Access | Get full text |
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Summary: | Bitemporal haemianopsia is the classic visual field defect of disorders that involve the optic chiasm, caused by the involvement of the crossing nasal-retinal fibres of each optic nerve. The cortical consequence of chiasmal abnormalities had previously been limited to congenital abnormalities as in an achiasmatic patient, in whom each eye projects to the ipsilateral hemisphere, 4 and in albinos, in whom most of the retinal ganglion cells cross to the contralateral side. 3 5 Our study, however, described the cortical consequences of acquired (adult) bitemporal haemianopsia, in which the nasal-retinal fibres are temporarily lost rather than misrouted. |
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Bibliography: | local:jnnp;81/10/1174 istex:7290B971C951AF77F7F8FF8DFD32D13A15BEB41A href:jnnp-81-1174.pdf PMID:20732866 ArticleID:jnnp183749 ark:/67375/NVC-C1SW34Z5-9 ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 0022-3050 1468-330X |
DOI: | 10.1136/jnnp.2009.183749 |