1. Department of Ophthalmology; Hietzing Hospital; Vienna Austria
2. Karl Landsteiner Institute for Process Optimization and Quality Management in Cataract Surgery; Vienna Austria
3. Department of Ophthalmology; KH Wiener Neustadt; Wiener Neustadt Austria
4. Karl Landsteiner Institute for Clinical Risk Management; Hietzing Hospital; Vienna Austria
5. Center for Medical Physics and Biomedical Engineering; Medical University of Vienna; Vienna Austria