N Nabholz1, S Navarre2, M Villain2. 1. Service ophtalmologie, CHRU Gui-de-Chauliac, 80, avenue Augustin-Fliche, 34000 Montpellier, France. Electronic address: nicolasnabholz@gmail.com. 2. Service ophtalmologie, CHRU Gui-de-Chauliac, 80, avenue Augustin-Fliche, 34000 Montpellier, France.