Automated Virtual Reality Eye Therapy for Post-Traumatic Convergence Insufficiency in Adults with Mild Traumatic Brain Injury

What this Trial Is About

Researchers are evaluating a portable virtual reality VR system with integrated eye tracking called Virtual Eye Rotation Vision Exercises VERVE to deliver automated vergence therapy. This study involves 30 binocularly normal Veterans without traumatic brain injury BNC and 50 Veterans with post-traumatic convergence insufficiency PTCI after mild traumatic brain injury mTBI. The goal is to determine the effectiveness of active versus sham VERVE therapy in improving vision function. Participants are randomly assigned to one of four groups binocularly normal controls receiving either active or sham therapy and PTCI participants receiving either active or sham therapy. The VERVE device uses a VR headset where participants perform specific convergence and divergence eye movements through a game controlled by their eye movements. The sham therapy involves playing the same VR game without changes in eye movement demands, maximizing gameplay without intervention. Participants undergo assessments before and after intervention sessions, including measures of near point of convergence, positive fusional vergence, and objective eye-tracking metrics like peak velocity and response accuracy. Symptom surveys related to brain injury vision, neurobehavioral symptoms, and convergence insufficiency are also completed. These evaluations occur at baseline, after selected intervention sessions, and within one week after completing intervention to monitor changes and safety throughout the study period.

Eye Recovery Automation for Post Injury Dysfunction (iRAPID)