1. From the Department of Ophthalmology, University of Geneva, Geneva, Switzerland;
2. Institut de Recherche en Ophtalmologie, Sion, Switzerland;
3. Institut de Recherche en Ophtalmologie, Sion, Switzerland;3University of Lausanne, Lausanne, Switzerland; and
4. Department of Ophthalmology, University of Cre´teil, Paris, France.