1. From the Department of Ophthalmology, University of Bonn, Bonn, Germany; the
2. First Eye Hospital, University of Lublin, Lublin, Poland; the
3. Institute for Medical Biometry and Applied Informatics, University of Heidelberg, Heidelberg, Germany; the
4. Department of Ophthalmology, University of Bern, Bern, Switzerland; and the
5. From the Department of Ophthalmology, University of Bonn, Bonn, Germany; the5Department for Pathophysiology of Vision and Neuro-Ophthalmology, University Eye Hospital Tu¨bingen, Tu¨bingen, Germany.