Eye-Tracking Test Concussion is also common on the battlefield, where a soldier may be miles from medical care. With funding from the U.S. Department of Defense, Jamshid Ghajar, President of the Brain Trauma Foundation, is developing a concussion test that can be used in combat settings. The prototype seen here contains a high-resolution camera that records the wearer's eye movement as she tracks a moving red dot. Healthy patients follow the circular motion without a problem, but brain trauma victims falter. Ghajar believes this simple test might provide a critical diagnosis in under a minute.