1. Group of Optics and Visual Perception (GOPV), Department of Optics, Pharmacology and Anatomy, University of Alicante, Alicante, Spain
2. Visutrain project, Science Park of the University of Alicante, Alicante, Spain
3. Advanced Clinical Optometry Unit, Department of Ophthalmology, Vithas Medimar International Hospital, Alicante, Spain
4. University of Valladolid, Valladolid, Spain