Multifocal visual-evoked potential in unilateral compressive optic neuropathy

Aim: To evaluate the effects of unilateral compressive optic neuropathy on amplitude and latency of multifocal visual evoked potentials (mfVEPs). Methods: Static automated perimetry and mfVEP recordings were obtained from six patients with presumed meningiomas affecting one optic nerve. Monocular an...

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Bibliographic Details
Published in:British journal of ophthalmology 2007-04, Vol.91 (4), p.445-448
Main Authors: Semela, Linda, Bo Yang, E, Hedges, Thomas R, Vuong, Laurel, Odel, Jeffery G, Hood, Donald C
Format: Article
Language:English
Subjects:
Aged
Biological and medical sciences
Clinical Science - Extended Report
Diseases of visual field, optic nerve, optic chiasma and optic tracts
Evoked Potentials, Visual
Female
Humans
Male
Medical sciences
Meningioma - complications
mfVEP
Middle Aged
Miscellaneous
multifocal visual evoked potential
Nerve Compression Syndromes - diagnosis
Nerve Compression Syndromes - etiology
Nerve Compression Syndromes - physiopathology
Ophthalmology
Optic Nerve Diseases - diagnosis
Optic Nerve Diseases - etiology
Optic Nerve Diseases - physiopathology
Optic Nerve Neoplasms - complications
Reaction Time
RMS
root mean square
SAP
static automated perimetry
Visual Field Tests - methods
Visual Fields
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Summary:Aim: To evaluate the effects of unilateral compressive optic neuropathy on amplitude and latency of multifocal visual evoked potentials (mfVEPs). Methods: Static automated perimetry and mfVEP recordings were obtained from six patients with presumed meningiomas affecting one optic nerve. Monocular and interocular amplitude and latency analyses were performed and compared with normal control subjects. Results: The change in the mfVEP amplitude agreed with visual field findings with regard to topography and severity of deviation from normal. The delay in recordable responses from affected eyes ranged from 7.6 to 20.7 ms (interocular analysis) and 7.9 to 13.9 ms (monocular analysis). Conclusions: Compressive optic neuropathy decreases the amplitude and increases the latency of the mfVEP. The changes in latency were similar to those seen in optic neuritis but larger than those in ischaemic optic neuropathy and glaucoma.
ISSN:0007-1161
1468-2079
DOI:10.1136/bjo.2006.097980