1 *Department of Surgical, Medical, Molecular and Critical Area Pathology, University of Pisa, Pisa, Italy †The Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland ‡The King Khaled Eye Specialist Hospital, Riyadh, Kingdom of Saudi Arabia §Eye Clinic, University of Cagliari, Cagliari, Italy ¶Eye Clinic, University of Piemonte Orientale, Novara, Italy.