References
- Ballemans, J., Kempen, G., and Zijlstra, G. (2011). Orientation and mobility training for partially-sighted older adults using an identification cane: a systematic review. Clinical Rehabilitation 25: 880–91, doi: 10.1177/0269215511404931.
- Brantlinger, E., Jimenez, R., Klingner, J., Pugach, M.C., and Richardson, V. (2005), Qualitative studies in special education, Exceptional Children 71: 195–207, doi: 10.1352/0047-6765(2005)43<92:IOEAWA>2.0.CO;2.
- Centers for Disease Control and Prevention (CDC) (2011). The state of vision, aging, and public health in America, U.S. Department of Health and Human Services, Atlanta, GA, Retrieved from: www.cdc.gov/visionhealth/pdf/vision_brief.pdf
- Cho, J., and Trent, A. (2006), Validity in qualitative research revisited, Qualitative Research, 6: 319–40, doi: 10.1177/1468794106065006.
- Colenbrander, A. (2010), Assessment of functional vision and its rehabilitation, Acta Ophthalmologica, 88: 163–73, doi: 10.1111/j.1755-3768.2009.01670.x.
- Dhanushkodi, S., and Manivannan, V. (2013), Diagnosis system for diabetic retinopathy to prevent vision loss, Applied Medical Informatics, 33: 1–11.
- Friedman, D., Congdon, N., Kempen, J., and Tielsch, J. (2002), Vision problems in the U.S.: prevalence of adult vision impairment and age-related eye disease in America, National Eye Institute, Bethesda, MD.
- Geruschat, D.R., and Smith, A.J. (2010), Low vision for orientation and mobility, in Wiener, W.R., Welsch, R.L., and Blasch, B.B. (eds), Foundations of orientation and mobility, 1, AFB, New York, NY: 63–83.
- Geruschat, D.R., Turano, K.A., and Stahl, J.W. (1998), Traditional measures of orientation and mobility performance and retinitis pigmentosa, Optometry and Vision Science, 75: 525–37.
- Gordon, K. (2009), The ‘Demographic Tsunami’: how demographic projections can prepare us for the provision of vision rehabilitation services to the baby boomer generation, AER Journal of Research and Practice in Visual Impairment and Blindness, 2: 2–17.
- Hamel, C. (2006), Retinitis pigmentosa, Orphanet Journal of Rare Diseases, 1: 1–12, doi: 10.1186/1750-1172-1-40.
- Haymes, S., Guest, D., Heyes, T., and Johnston, A. (1996), Mobility of people with retinitis pigmentosa as a function of vision and psychological variables, Optometry Vision Science, 73: 621–37.
- Kestelyn, P.G., and Cunningham, E.T. Jr. (2001). HIV/AIDS and blindness, Bulletin of the World Health Organization 79: 208–13.
- Kuyk, T., and Elliot, J.L. (1999), Visual factors and mobility in persons with age-related macular degeneration, Journal of Rehabilitation Research and Development, 36: 303.
- Kuyk, T., Eiliott, J.L., Biehl, J., and Fuhr, P.S. (1996), Environmental variables and mobility performance in older with low vision, Journal of the American Optometric Association, 67: 403–9.
- Lovie-Kitchin, J., Woods, R., and Black, A. (1996), Effects of illuminances on the mobility performance of adults with retinitis pigmentosa, Optometry Vision Science, 73: 206–14.
- Marron, J.A., and Bailey, I.L. (1982), Visual factors and orientation and mobility performance, American Journal of Optometry and Physiological Optics, 59: 413–26.
- Murphy, J. (2008), The high cost of poor vision, Review of Optometry, 145: 39–44.
- Négrel, A.D., and Thylefors, B.B. (1998), The global impact of eye injuries, Ophthalmic Epidemiology, 5: 143–69.
- Prasad, P.S., Schwartz, S.D., and Hubschman, J.P. (2010), Age-related macular degeneration: current and novel therapies, Maturitas, 66: 46–50, doi: 10.1016/j.maturitas.2010.02.006.
- Ryan, G., and Bernard, R. (2003), Techniques to identify themes, Field Methods., 15: 85–109, doi: 10.1177/1525822X02239569.
- Scanlon, P.H., Aldington, S.J., and Stratton, I.M. (2013), Epidemiological issues in diabetic retinopathy, Middle East African Journal of Ophthalmology, 20: 293–300, doi: 10.4103/0974-9233.120007.
- Schiller, J.S., Lucas, J.W., Ward, B.W., and Peregoy, J.A. (2012), Summary health statistics for U.S. adults: National Health Interview Survey, 2010. National Center for Health Statistics, Vital Health Statistics, 10 (252), Retrieved from: www.cdc.gov/nchs/data/series/sr_10/sr10_252.pdf
- Schwartz, T. (2010), Causes of visual impairment: pathology and its implications, in Corn, A.L., and Erin, J.N. (Eds), Foundations of Low Vision: Clinical and Functional Perspectives, 2nd ed., AFB Press, New York, NY, pp. 138–91.