1. Salus University College of Optometry, Philadelphia, PA, USA
2. Padula Institute of Vision Rehabilitation, Guilford, CT, USA
3. Department of Optometry Womack Army Medical Center, Fort Bragg, NC, USA
4. Department of Health Policy and Management, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
5. Department of Ophthalmology, Wilmer Eye Institute, Johns Hopkins Medicine, Baltimore, MD, USA