1. Ophthalmology, Miguel Servet university hospital University of Zaragoza Zaragoza, Spain
2. Ophthalmology, Department of Surgical, Medical, Molecular Pathology and of Critical Area University of Pisa Pisa, Italy
3. Eye Clinic, San Paolo Hospital University of Milan Milan, Italy
4. Anatomical-Clinical Laboratory for Functional Diagnosis and Treatment of Glaucoma and Neuro-ophthalmology, Eye Clinic, DiNOGMI University of Genoa Genoa, Italy
5. Department of Ophthalmology University of Siena Siena, Italy