1 Texas A&M University School of Medicine, Bryan, TX.
2 Texas Tech University Health Sciences Center El Paso, Paul. L. Foster School of Medicine, El Paso, TX.
3 Blanton Eye Institute, Houston Methodist Hospital, Houston, TX, USA.
4 Blanton Eye Institute, Houston Methodist Hospital, Houston, TX, USA; Departments of Ophthalmology, Neurology, and Neurosurgery, Weill Cornell Medicine, New York, NY; Department of Ophthalmology, University of Texas Medical Branch, Galveston, Texas; University of Texas MD Anderson Cancer Center, Houston, TX; Department of Ophthalmology, The University of Iowa Hospitals and Clinics, Iowa City, IA. Electronic address: aglee@houstonmethodist.org.