1. Ophthalmology Clinic Department of Medicine and Aging Science, University G. d'Annunzio of Chieti-Pescara, Chieti, Italy
2. Ophthalmology Unit, Department of Neurological, Neuropsychological, Morphological and Movement Sciences, University of Verona, Verona, Italy
3. Department of Ophthalmology, University of Siena, Siena, Italy
4. Excellence Eye Research Center, CeSI, University G. d'Annunzio of Chieti-Pescara, Chieti, Italy