1. Ophthalmology Clinic, Department of Biomedical Sciences, University Hospital of Messina, 98124 Messina, Italy
2. Ophthalmology Department, Faculty of Medicine and Health Sciences, Andrzej Frycz Modrzewski Krakow University, 30-705 Krakow, Poland
3. Ophthalmology Unit, Department of Surgery, University Hospital of Messina, 98124 Messina, Italy
4. IRCCS Bietti Foundation, 00198 Rome, Italy
5. Eye Clinic, Department of Neurosciences, Psychology, Pharmacology and Child Health, Careggi Hospital, 50134 Florence, Italy
6. Department of Ophthalmology, District Railway Hospital in Katowice, Medical University of Silesia, 40-752 Katowice, Poland