- Since 2012, head of the Department of Ophthalmology at the Medical Specialist Center Kampnagelfabrik Hamburg.
- Since 1996, practicing as specialist in ophthalmology
- Further training and scientific assistant at the eye clinic of the University Hospital UKE Hamburg-Eppendorf, here practicing as specialist in ophthalmology and, among other activities, head of several DFG-research projects (DFG=German Research Association)
- Research activities at the National Eye Institute, National Institutes of Health (NIH) as scholar of the Fogarty International Foundation, Bethesda, Maryland, USA
- Studies of human medicine and doctorate at the medical faculty of the university Ulm