Pediatric patients (age 12 to 21 inclusive) with a diagnosis of multiple sclerosis, ADEM, anti-MOG mediated demyelinating disease as well as healthy controls will be recruited to undergo clinical testing. The study visits will include neuropsychological testing, optical coherence tomography (OCT) and MRI on both the 3T and 7T magnet. Subjects will be asked to undergo two study visits separated by 12 months to 18 months. Each study visit will have the same neuropsychological, OCT, and research MRI examinations.
