1 Clínico San Carlos University Hospital, Ophthalmology Unit, Madrid, Spain;
2 Department of Ophthalmology, Castilla La Mancha University, Albacete, Spain;
3 Division of Ophthalmology, Miguel Hernández University, Alicante, Spain;
4 Pío del Río Hortega University Hospital, Ophthalmology Unit, Valladolid, Spain;
5 New England Eye Center, Tufts Medical Center, Boston, Massachusetts, United States; and.
6 Department of Ophthalmology, Castilla La Mancha University, Albacete, Spain; Alicante Institute of Ophthalmology, VISSUM, Vitreo-Retinal Unit, Alicante, Spain.