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Erschienen in: Documenta Ophthalmologica 1/2010

01.02.2010 | ISCEV Standards

ISCEV standard for clinical visual evoked potentials (2009 update)

verfasst von: J. Vernon Odom, Michael Bach, Mitchell Brigell, Graham E. Holder, Daphne L. McCulloch, Alma Patrizia Tormene, Vaegan

Erschienen in: Documenta Ophthalmologica | Ausgabe 1/2010

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Abstract

Visual evoked potentials (VEPs) can provide important diagnostic information regarding the functional integrity of the visual system. This document updates the ISCEV standard for clinical VEP testing and supersedes the 2004 standard. The major change in this revision is that test parameters have been made more precise to achieve better consistency of results within and between test centers. The ISCEV standard VEP protocols are defined for a single recording channel with a midline occipital active electrode. These protocols are intended for assessment of prechiasmal function; additional electrode sites are recommended for evaluation of chiasmal and postchiasmal function. ISCEV has selected a subset of stimulus and recording conditions that provide core clinical information and can be performed by most clinical electrophysiology laboratories throughout the world. These are: 1. Pattern-reversal VEPs elicited by checkerboard stimuli with large 1° (i.e., 60 min of arc; min) and small 0.25° (15 min) checks. 2. Pattern onset/offset VEPs elicited by checkerboard stimuli with large 1° (60 min) and small 0.25° (15 min) checks. 3. Flash VEP elicited by a brief luminance increment, a flash, which subtends a visual field of at least 20°.
Fußnoten
1
Michelson contrast = {[Lmax − Lmin]/[Lmax + Lmin]} × 100%, where L denotes luminance, max denotes maximum of the white squares, and min denotes minimum of the black squares.
 
Literatur
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Metadaten
Titel
ISCEV standard for clinical visual evoked potentials (2009 update)
verfasst von
J. Vernon Odom
Michael Bach
Mitchell Brigell
Graham E. Holder
Daphne L. McCulloch
Alma Patrizia Tormene
Vaegan
Publikationsdatum
01.02.2010
Verlag
Springer-Verlag
Erschienen in
Documenta Ophthalmologica / Ausgabe 1/2010
Print ISSN: 0012-4486
Elektronische ISSN: 1573-2622
DOI
https://doi.org/10.1007/s10633-009-9195-4

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