1. Wilmer Eye Institute, Johns Hopkins University, Baltimore, Maryland, USA
2. Wisconsin Council of the Blind and Visually Impaired, Madison, Wisconsin, USA
3. Los Angeles, California, USA
4. Hoover low vision rehabilitation services, Greater Baltimore Medical Center, Baltimore, Maryland, USA
5. Focal Point, Bristol, UK
6. Lausanne, Switzerland
7. College of Education and Rehabilitation, Salus University, Pennsylvania, USA
8. Second Sight Medical Products, Sylmar, California, USA