[Simplified videonystagmoscopy].

Abstract

Videonystagmoscopy visualizes nystagmus on a television monitor and records it on video tape for later study, records, and reproduction. Early attempts date from long ago, but the technique only recently has spread, since the development of complex computerized equipment which, however, confines it to certain vestibular exploration laboratories. In order for this technique to become more widely used, simple equipment is needed, such as that described in this article. Our system consists of a single infrared light minivideo camera that is attached to the left eye using an eyeglass-mounting system that also occludes the right eye. The examination method is routine. Our results show the following advantages over electronystagmography: visualization of the rotary component, non-interference of visual stimuli, mechanical and electronic stability, speed, and low cost. If necessary, it can be complemented by electronystagmography and computer analysis.