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
6. Department of Ophthalmology, Castilla La Mancha University, Albacete, Spain 6Alicante Institute of Ophthalmology, Vissum, Vitreo-Retinal Unit, Alicante, Spain