Jamshid Ghajar, MD, uses the eye-tracking technology he developed to record a patient's eye movement for 30 seconds as a way of diagnosing concussions more accurately and tracking recovery.

Patients who've suffered a concussion feel out of sync. When somebody gets out of sync in their thinking, they also get out of sync in their movements.

-Jamshid Ghajar, MD, PhD, Director of the Stanford Concussion and Brain Performance Center