The inVision package from NeuroCom® quantifies a patient's ability to maintain visual acuity and stable gaze while actively moving the head. The inVision package includes:
- The Dynamic Visual Acuity (DVA) Test
Quantifies the impact of vestibular ocular reflex (VOR) system impairment on a patient's ability to perceive objects accurately while moving the head at a given velocity on a given axis.
- Gaze Stabilization Test (GST)
Quantifies the range of head movement velocities on a given axis over which a patient is able to maintain an acceptable level of visual acuity.
Effective image stabilization during head movement is a key factor in performing activities of daily living. This process can be severely impacted by vestibular deficits with the ability to stabilize gaze and maintain visual acuity decreasing as the severity of a vestibular deficit increases. The assessment of a patient's ability to perform visual tasks requiring image stabilization is considered complementary to physiological tests of the VOR system.