1 *Department of Ophthalmology, "Lozano Blesa" University Clinic Hospital, Zaragoza, Spain †School of Medicine, University of Zaragoza, Zaragoza, Spain ‡Aragon Health Sciences Institute, Zaragoza, Spain §Department of Ophthalmology, Poznan City Hospital, Poznan, Poland ¶University of Warmia and Mazury, Olsztyn, Poland.