Cosimo Mazzotta MD, PhD is Professor of Corneal Pathology at the Ophthalmology Postgraduate Speciality School, Siena University, Italy and is Director of the Siena International Crosslinking Centre. Claudio Traversi MD is Professor of Corneal Surgery and Medical Retina Diseases at the Ophthalmology Postgraduate Speciality School, Siena University, ItalyStefano Baiocchi MD, PhD, Professor of Cataract and Refractive Surgery, at the Ophthalmology Postgraduate Speciality School, Siena University, ItalyGian Marco Tosi MD, PhD is Associate Professor of Ophthalmology and Director of the Ophthalmology Operative Unit at Siena University, Italy Marc D. Friedman, Dr, Avedro, Waltham, MA, USA