1974-1976    Fellowship in Visual Neurophysiology at the Institute of Physiology, Free University Berlin (Prof. Dr. O. J. Grüsser)
1976-1980    Training in Ophthalmology at the Department of Ophthalmology, University Freiburg
1981             Senior staff member at the Department of Ophthalmology, University Freiburg
1984             “Habilitation” in Ophthalmology at the University Freiburg
1987             Vice Chairman of the Department of Ophthalmology, Freiburg
1990-1995    Chairman of the Department of Ophthalmology, University Mainz
1993             Appointed chair in Ophthalmology at Gesamthochschule, University Essen Vice president of the „Initiativkreis zur Früherkennung des Glaukoms“ Co-Organiser  “Augenärztliche Akademie Deutschlands”, German Academy of Ophthalmology
Since 1995   Chairman of the Department of Ophthalmology, University Würzburg
1997             Honorary doctor of the University of Iasi, Romania
2000 –           Member of the Executive Committee of the European Glaucoma Society
2001            Corresponding Member of the Academy of Sciences of Mainz Honorary Member of the Romanian Society of Ophthalmology
2002            Honorary Member of the Croatian Society of Ophthalmology
2002-2003    President of the German Society of Ophthalmology
2003            Member of the Executive board of the Glaucoma Research Society
2005            Honorary Member of the Romanian Academy of Medical Sciences.
2005 –         Secretary of the German Society of Ophthalmology.
2007 –         Member of the Board of Governors of the World Glaucoma Association
2009           Honorary Member of the Union of Bulgarian Ophthalmologists

Major scientific interest:
Basic and clinical research in glaucoma
Glaucoma surgery
Childhood glaucoma and childhood cataract
Laboratory for cell biology in glaucoma research.
Prospective Randomized Clinical Studies

Publications:
178 original publications, editor and publisher of 13 books.

Member of the publishing advisory board and scientific advisory board of following journals:
Der Ophthalmologe (Section Editor)
Journal of Glaucoma
Zeitschrift Prakt. Augenheilkunde
Ophthalmochirurgie
Graefe´s Archives of Clinical and Experimental Ophthalmology
Klinische Monatsblätter für Augenheilkunde

Member of Scientific Societies:
American Academy of Ophthlmology
Association for Research in Vision and Ophthalmology
Deutsche Ophthalmologische Gesellschaft
Deutsche Gesellschaft für Intraokularlinsenimplantation und refraktive Chirurgie
European Society of Cataract and Refractive Surgery
European Association for Vision and Eye Research
European Glaucoma Society
World Glaucoma Association