Concussion and traumatic brain injury (TBI) are serious public health problems, but they can be tricky to diagnose, with symptoms sometimes not presenting for days or weeks following a head injury. Abnormal eye movement can indicate a TBI, but traditional "follow my finger" screenings won't pick up more subtle changes in vision. Artificial intelligence (AI) could improve diagnosis by measuring deficits in certain eye movements that occur with a TBI. In a study published online July 25, 2019, in the journal Concussion, Bethesda, Md.-based Righteye Inc.'s FDA eye-tracking technology not only identified but scaled the severity of TBIs by measuring horizontal and vertical saccades, rapid eye movements between fixed points.