Author/Editor		Brecelj, J
Title		Electrodiagnostics of chiasmal compressive lesions
Type		članek
Source		Int J Psychophysiol
Vol. and No.		Letnik 16, št. 2-3
Publication year		1994
Volume		str. 263-72
Language		eng
Abstract		Recording of visual evoked potentials (VEPs) is not yet a routine test in patients with suspected chiasmal compressive lesions, but has proved useful to a clinician in assessing and following-up visual pathway dysfunctions. Abnormalities of VEPs can be found even in patients without clinical evidence of the visual impairment: VEP delays and alterations of the waveform, asymmetric distribution in one eye or in both eyes (crossed asymmetry) can indicate chiasmal compressive lesion. Simultaneous recording of pattern electroretinograms (PERGs) can additionally provide useful information about the patient's cooperation as well as about eventual retrograde degeneration of the ganglion cells. Electrophysiologic tests can be regarded as an integral part of diagnostic procedures--ocular diagnostic tests and neuroimaging--in suspected compressive lesions of the optic chiasm.
Descriptors		ELECTRODIAGNOSIS OPTIC CHIASM EVOKED POTENTIALS, VISUAL