The Bertec Vision Advantage (BVA) identifies dysfunction in the vestibular ocular reflex (VOR) per the Dynamic Visual Acuity Test. The BVA provides a more objective test than the standard clinical DVA test using an eye chart. The BVA also includes a Gaze Stability Test that identifies when the VOR falls below normal limits and whether there is an asymmetry between the left and right side. These advanced capabilities allow the clinician to customize treatment to the patient, resulting in optimal patient outcomes.
Wireless and light weight head tracker
Next generation VOR assessments
Patient-specific baseline comparison
Automatic sensor calibration
New technology allows for unrestricted patient movements and more flexibility for clinicians
Optimal patient outcomes
Next generation VOR assessments
Do your patients have the optimal eye and head coordination to maximize their performance? Find out using the Bertec Vision Advantage system, which identifies dysfunction in the vestibular ocular reflex (VOR) per the Dynamic Visual Acuity (DVA) Test and measures the head velocity, axis, and direction where visual accuracy breaks down per the Gaze Stabilization Test (GST).
Wireless and lightweight
Eliminating the need for long, unruly cords, the wireless and lightweight head-worn sensor ensures that your patient’s head movement is un-hindered and free-moving. The sensor is designed to detect head movement in all directions, so our software can distinguish whether a patient’s head is moving correctly for each test.
Portable and convenient
The Bertec Vision Advantage’s portable design allows your facility to use the system in multiple locations to improve patient workflow.
Ready to learn how we can support your work?
Wireless, lightweight head-worn sensor
Bertec Vision Advantage Software
Touch screen display and remote control
Wireless-computerized VOR training exercises with selectable controls for velocity and direction of head movement
Computerized Gaze Stabilization (GST) and Dynamic Visual Acuity (DVA) tests
Headband: adjustable elastic band
Triaxial gyroscope, accelerometer and compass sensors
Dedicated product case for portability and storage of system
Online educational product videos for clinician
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.
Head rotation can be measured in yaw, pitch, and roll planes
Modular software design to fit your needs
Multiple Axis of Rotation
Wireless Inertial Measurement Unit (IMU)
Sampling Frequency: 175 Hz
Communication Range: Up to 20 feet +
Charging device: USB cable
Use per charge: Up to five hours
Battery: Rechargeable lithium-polymer
Patented and HIPAA compliant patient database with merge and sync capabilities across all Bertec® Balance Advantage® products
Recommend use with surgical bonnets (package of 100 supplied with purchase)