1 Ophthalmology Department, University Hospital, Saint-Étienne, France. t.garcin@univ-st-etienne.fr.
2 Corneal Graft Biology, Engineering and Imaging Laboratory, BiiGC, EA2521, Federative Institute of Research in Sciences and Health Engineering, Faculty of Medicine, Jean Monnet University, 10, Rue de la Marandière, 42055, Saint-Étienne Cedex 2, France. t.garcin@univ-st-etienne.fr.