VO425 is Interacoustics’ top of the line VNG offering. In addition to the features offered with VN415, VO425 also includes a full battery of oculomotor tests. The complete VO425 test battery consists of Spontaneous Nystagmus, Gaze, Smooth Pursuit, Saccade, Optokinetics, Positional, Dix-Hallpike and Bithermal / Monothermal Caloric. And of course you can run the Nydiag 200 rotary chair with the VO425 software as well. Additional features include: Cutting edge eye trackers adjust for make-up and dilated pupils Reader station enables shared access to patient reports from multiple work stations MWST (Monothermal Warm Caloric screening test after two warm irrigations) Torsional eye movement observation with full screen eye images Sleek portable design Fully randomized combined vertical and horizontal saccade protocol Detailed oculomotor testing Customizable Monocular or binocular options ANSI standard compliant Real time analysis Synchronized video playback High speed resolution up to 174 Hz in monocular mode