The System 2000 Rotational Vestibular Chair can measure Vestibular-Ocular Reflex (VOR) from 0.01 to 1.28 Hz at velocities up to 300 degrees/second. With the System 2000 chair, a clinician is able to perform Visual Vestibulo-ocular Reflex (VVOR), Visual Fixation (VFX), Optokinetic After Nystagmus (OKAN), Velocity Step and Subjective Visual Vertical tests in addition to the standard ocular-motor testing. Features • Advanced Chair Design The System 2000 Rotational Vestibular Chair accurately accelerates and changes direction without inertial artifact. The torque motor in the base of the chair is engineered to provide quiet, precisely controlled rotation. • Laser Projector A focused solid state laser with galvonometer produces pinpoint stimulus for gaze, pursuit, saccade, and VOR with fixation tests. • Optokinetic Drum This highly accurate servo-motor driven projector is ceiling mounted for OKN and VOR with vision tests. • Video Eye Tracking Utilizing VisualEyes (VNG) on the rotational chair increases the ease and accuracy of eye movement recording. VisualEyes see-through provides a full field of view and refines the diagnostic process by eliminating biological artifacts and allowing eye movements to be recorded and analyzed objectively as well as subjectively from one or both eyes.