1. Neuro-ophthalmology Division, Oftlamo-Sanitas Eye Institute. School of Medicine, Fundación Universitaria Sanitas, Bogotá, Colombia
2. Department of Ophthalmology, Doheny Eye Institute, Los Angeles, California, USA
3. Department of Radiology, Huntington Memorial Hospital, Pasadena, California, USA
4. Department of Neurosurgery, Southern California Neurosurgical Associates, Pasadena, California, USA
5. Department of Ophthalmology, David Geffen School of Medicine at UCLA, Los Angeles, California, USA