Professor of Ophthalmology-University of Bonn-Ophthalmology-2007, Specialty Board Certificate-Medical Association North-Rhine-Ocular surgery-2004, European Board Certificate EBO-(European Board of Ophthalmology)-Ophthalmology-2004, Postdoctoral lecture qualification-University of Bonn-Ophthalmology-2002, Specialty Board Certificate-Medical Association North-Rhine-Laser Surgery in Ophthalmology-2001, DEGUM qualification for ocular sonography-Degu-Ophthalmology-2001, Board Certificate-Medical Association North-Rhine-Ophthalmology-1999, Doctoral thesis-University of Bonn-Medicine-1995.
Vitreoretinal surgery, Refractive Cataract surgery, Minimal invasive Glaucoma surgery, New Technologies in corneal Transplantation, Age-related macular degeneration