1. Department of Ophthalmology University of Catania Catania Italy
2. Department of Experimental Medicine University of Campania 'L.Vanvitelli' Naples Italy
3. Department of Biomedical and Biotechnological Sciences School of Medicine University of Catania Catania Italy
4. Institute of Life Science Vasile Goldis Western University Arad Romania
5. Multidisciplinary Department of Surgical and Dental Specialties University of Campania'L. Vanvitelli' Naples Italy
6. General Directorate of the University Polyclinic 'L. Vanvitelli' Naples Italy
7. Department of Clinical, Public and Preventive Medicine University of Campania 'L. Vanvitelli' Naples Italy
8. Eye Clinic University of Catania and Santa Marta Hospital Catania Italy