1. Department of Ophthalmology, Institute for Maternal and Child Health—IRCCS “Burlo Garofolo”, 34137 Trieste, Italy
2. Laboratory of Sensorimotor Research, National Eye Institute, National Institutes of Health, Department of Health and Human Services, Bethesda, MD 20892, USA
3. Department of Engineering and Architecture, University of Trieste, 34127 Trieste, Italy