Detection of visuomotor dysfunction in mild traumatic brain injury using binocular retinal polarization scanning.

Objective: The head and intraocular trauma tool (HITT) is a portable, binocular retinal polarization scanner (RPS) that detects ocular fixation with high precision to assess visuomotor function. We conducted a pilot evaluation of a prototype binocular RPS device to evaluate alterations in fixation stability, binocularity (convergence), and saccadic latency after mild traumatic brain injury (mTBI).

Methods: Two groups were studied prospectively: (1) single observation study of mTBI patients in a hospital ER ( = 7) and age-matched controls ( = 43); (2) high-school athletes preseason ( = 28), after sports-related mTBI ( = 3), and at season end ( = 5).