Testing of a New Computer Screen for Patients With Persistent Concussion Symptoms (PCS).

The study will involve completing a reading task on the standard computer monitor and the newly designed computer monitor. First, participants will be asked to rate their pre-test symptoms using a SCAT-III symptom checklist. Then they will read a short story and watch moving images on one of the devices (standard computer monitor or the newly designed computer monitor) for 30 minutes or until persisting concussion symptoms of moderate severity arise. Then, they will be asked to rate their post-test clinical symptoms using a SCAT-III symptom checklist. On a second visit, 7 to 10 days later, they will do the same activity on the other device. Each visit will take 60 minutes. The study will involve 100 patients with a history of concussion and computer screen intolerance.