Mary A. Johnson
Dr. Johnson is an Associate Professor in the Department of Ophthalmology and Visual Sciences in the University of Maryland School of Medicine, where she directs the Visual Electrodiagnostics Service. Her research focuses on how disease affects visual function in human patients and in animal models, and from these data she develops insights into the mechanisms of damage. Her current work implicates horizontal cell dysfunction in the etiology of photophobia in traumatic brain injury, and she developed an ERG protocol to measure this change.