A system for use by a clinician to perform an emergency diagnosis of a patient for a balance disorder includes a position sensor and an optical sensor that are mounted on a base member. The base member is configured to be fixedly held over the eyes of the patient during a predetermined diagnostic maneuver of the head of the patient. A processor having electronic memory is included which receives outputs from the optical sensor and the position sensor. A set of instructions constituting an eyetracker computer program is processed by the computer. Quantified eye movement data and a video stream signal can be displayed on a visual display that is affixed to the base member for observation by the clinician and recorded in computer readable memory.
