1 Department of Ophthalmology, Emory University School of Medicine, Atlanta, GA Departments of Ophthalmology and Neurology, Emory University School of Medicine, Atlanta, GA Department of Epidemiology, Rollins School of Public Health and Laney Graduate School, Atlanta, GA Department of Radiology and Imaging Science, Emory University School of Medicine, Atlanta, GA Departments of Ophthalmology, Neurology, and Neurological Surgery, Emory University School of Medicine, Atlanta, GA Departments of Ophthalmology and Neurology, Emory University School of Medicine, Atlanta, GA.