1. Department of Medical and Surgical Specialties, Radiological Specialties and Public Health, Ophthalmology Clinic, University of Brescia, 25123 Brescia, Italy
2. Department of Medicine and Health Sciences, University of Molise, 86100 Campobasso, Italy
3. I.R.C.C.S. Neuromed, Località Camerelle, Pozzilli, 86077 Isernia, Italy