1 School of Medicine (CK), University of Texas Medical Branch, Galveston, Texas; Department of Ophthalmology (SR, PWM, and AGL), Blanton Eye Institute, Houston Methodist Hospital, Houston, Texas; Stanley H. Appel Department of Neurology (ZF), Houston Methodist Hospital, Houston, Texas; Departments of Ophthalmology, Neurology, and Neurosurgery (AGL), Weill Cornell Medicine, New York, New York; Department of Ophthalmology (AGL), University of Texas Medical Branch, Galveston, Texas; University of Texas MD Anderson Cancer Center (AGL), Houston, Texas; Texas A and M College of Medicine (AGL), Bryan, Texas; and Department of Ophthalmology (AGL), The University of Iowa Hospitals and Clinics, Iowa City, Iowa.