1. From the Department of Ophthalmology, University of Florence, Florence, Italy; the
2. Department of Ophthalmology University of Udine, Udine, Italy; and the
3. Fondazione G. B. Bietti per lo Studio e la Ricerca in Oftalmologia–IRCCS (Istituto Ricerca e Cura a Carattere Scientifico), Rome, Italy.