1. Faculty of Health Sciences, University of Ottawa, 43 Temple-ton Street, Room 109, Ottawa, Ontario, K1N 6X1, Canada
2. Center for Sight Enhancement, and professor, School of Optometry, University of Waterloo, 200 University Avenue West, Waterloo, Ontario, N2L 3G1, Canada
3. Aging Rehabilitation and Geriatric Care Research Centre, Lawson Health Research Institute, University of Western Ontario, 801 Commissioners Road East, Room B-3002a, London, Ontario, N6C 5J1, Canada