1. Department of Ophthalmology Leiden University Medical Center Leiden The Netherlands
2. Royal Dutch Visio, Centre of Expertise for Blind and Partially Sighted People Amsterdam The Netherlands
3. Department of Ophthalmology University Medical Center Utrecht Utrecht The Netherlands
4. Bartiméus, Diagnostic Center for Complex Visual Disorders Zeist The Netherlands
5. Department of Ophthalmology Amsterdam UMC Academic Medical Center Amsterdam The Netherlands