1. Ophthalmology Department, Complejo Asistencial Universitario de Salamanca, Salamanca, Spain
2. Department of Human Anatomy and Histology, University of Salamanca, Salamanca, Spain
3. Radiodiagnosis Service, Complejo Asistencial Universitario de Salamanca, Salamanca, Spain
4. Laboratory of Surgical NeuroAnatomy, University of Barceloma, Barcelona, Spain