1. Ophthalmology Clinic, Department of Medicine and Science of Ageing, University G. D'Annunzio Chieti-Pescara, Chieti, Italy
2. Moorfields Eye Hospital NHS Foundation Trust, London, United Kingdom
3. Department of Medical, Oral and Biotechnological Sciences, University G. D'Annunzio Chieti, Laboratory of Biostatistics, Chieti, Italy