1 Ocular Oncology Service, Institute of Ophthalmology and Visual Sciences/Tecnologico de Monterrey/Hospital Zambrano-Hellion, Monterrey, Nuevo Leon, Mexico.
2 Department of Ophthalmology, Mayo Clinic, Rochester, Minnesota, USA.
3 Radiation Oncology Service, Tecnologico de Monterrey/Hospital Zambrano-Hellion, Monterrey, Nuevo Leon, Mexico.