Standard for Visual Evoked Potentials 1995

A revised ISCEV standard for clinical electro-retinography has been published (1995). It is our concern that similar standards should be adopted for visual evoked potentials (VEP). The VEP is an electrophysiological signal that is recorded at the scalp, using standard EEG techniques. When used with other visual electrophysiological techniques the VEP can provide important diagnostic information with regard to the functional integrity of the visual system. Our intention is that the standard method and responses for each of the stimuli should be used widely, but not to the exclusion of additionaltests that individuallaboratoriesmay chooseor may continue to use. It is not essential that all stimuli shouldbe used for every investigationon every patientor normal subject. In addition, we propose a standard nomenclature for the various types of recording. These standards will be reviewed at approximately 4 year intervals. The organisationof this report is as follows: