1. Department of Ophthalmology, University Medical Center Utrecht, Utrecht, the Netherlands
2. Department of Ophthalmology, Leiden University Medical Center, Leiden, the Netherlands
3. Department of Ophthalmology, Amsterdam University Medical Centers, Amsterdam, the Netherlands
4. The Rotterdam Eye Hospital and Rotterdam Ophthalmic Institute, Rotterdam, the Netherlands
5. Bartiméus, Diagnostic Center for complex visual disorders, Zeist, the Netherlands