Portable Infrared Video ENG Recording System

Electronystagmography (ENG) is commonly prescribed for the evaluation of patients withvestibular or neurological dizziness, vertigo, and/or disequilibrium. Although the ENG exam is routinelyperformed in a clinical setting, the majority of a patient's vertiginous episodes occur outside of thephysician's office. The ability to observe and document these 'naturally occurring' eye movementswould seem important for a thorough ENG evaluation. The InfraRed/Video ENG System is an establishedmethod for the recording of eye movements using video cameras, invisible infrared illumination andassociated computer technology. This method of recording documents bilateral, monocular eyemovements (horizontal, vertical and rotary components). The Phase I work effort will configure thecurrent IR/Video ENG System into a portable model to be used by a pilot group of House Ear Clinicpatients during their 'naturally occurring' vertiginous episodes (at home, in the workplace, during travel,etc.). These videotaped responses will then be clinically reviewed and analyzed with the currentInfra-Red/Video ENG System. The results will be correlated to the patient's normal clinical workupfindings to assess the advantages of this additional IR/Video ENG capability.