1 Department of Ophthalmology (AGL), Houston Methodist Hospital, Houston, Texas; Department of Ophthalmology (AGL), Baylor College of Medicine, Houston, Texas; Departments of Ophthalmology, Neurology, and Neurosurgery (AGL), Weill Cornell Medical College, Houston, Texas; University of Texas Department of Ophthalmology (AGL), Medical Branch, Galveston, Texas; Department of Ophthalmology (AGL), UT MD Anderson Cancer Center, Houston, Texas; Department of Ophthalmology (AGL), The University of Iowa Hospitals and Clinics, Iowa City, Iowa; and Departments of Ophthalmology and Vision Science, Neurology, and Neurological Surgery (JLK), University of California, Davis, California.