Manfred Spitznas M.D. is Emeritus Professor of Ophthalmology. From 1979 to 1981 he served as Wasserman Professor of Ophthalmology and Director of the Retina Service at UCLA, USA. From 1981 to 2002 he was Professor and Chairman of the Department of Ophthalmology at the University of Bonn, Germany. For his outstanding contributions to both basic science and surgery of the retina and vitreous he has received numerous prestigious awards. Among them are: The Hermann Wacker Prize of the Club Jules Gonin 1979 Membership of Merit of the Italian Ophthalmological Society 1990 Honorary Membership of the