Visual Processing Time (VPT) – this quick screen ensures the patient can process the optotype (letter “E”) stimuli quickly enough to use DVA and GST protocols accurately and reliably.
Baseline Visual Acuity (BVAT) measures a patient’s visual acuity with the head stationary. The results are then used for comparison to visual acuity while the head is moving during DVA and GST protocols.
Dynamic Visual Acuity (DVA) provides an assessment of the smallest character the patient can identify accurately while the head is moving at a specific and constant velocity. Data can be collected for any axis of rotation (yaw, pitch, or roll) and are analyzed and reported for each direction of rotation separately. Results indicating significant loss of visual acuity in one or both directions are considered an indication of VOR impairment.
Gaze Stabilization Test (GST) measures the head velocity, axis, and direction where visual accuracy breaks down. Results provide insight into a patient’s effective use of VOR as it relates to functional demands for activities of daily living, and clinicians can use the data to make training decisions and document progress.
Patient Training uses computerized VOR training to simulate gaze stabilization X1 exercises, with selectable controls for velocity and direction of head movement. Training exercises are customized to patient performance on DVA and GST and can be programmed to progress through varying levels of challenge depending on patient’s successful completion. Progress reports are automatically stored for printing.
