1. Medicare Vision Rehabilitation Services Act of 2003—H.R.1902 (Introduced in House—IH)
2. World Health Organization: 10th Revision of the WHO International Statistical Classification of Diseases, Injuries and Causes of Death. http://www.cdc.gov/nchs/icd/icd10.htm
3. Pascolini, D., Mariotti, S.P.: Global estimates of visual impairment: 2010. Br. J. Ophthalmol. (2011). doi: 10.1136/bjophthalmol-2011-300539
4. World Health Organisation: Elimination of Avoidable Blindness Report by the Secretariat. Fifty-sixth World Health Assembly 2003
5. Manduchi, R., Kurniawan, S.: Mobility-related accidents experienced by people with visual impairment. In: Insight: Research and Practice in Visual Impairment and Blindness, vol. 4 (2011)