The electro-oculogram is a widely used electrophysiologic test, but recording techniques vary among different laboratories. This Standard, approved by the International Society for Clinical Electrophysiology of Vision (ISCEV), describes simple technical procedures that will allow reproducible and comparable electro-oculograms to be recorded under a few defined conditions. The document is intended to improve the comparability of electrooculogram data obtained throughout the world by guiding both clinicians and manufacturers, and ISCEV recommends that future published reports indicate whether the recording technique meets the international Standard.