1. Bennet I. Optometric practice management. Burlington: Butterworth-Heinemann; 2003.
2. Bourne RR, et al. Causes of vision loss worldwide, 1990—2010: a systematic analysis. Lancet Glob Health. 2013;1(6):e339–49.
3. Brien Holden Vision Institute. Academic vision centre handed over in Malawi. 2015. Available at:
http://www.brienholdenvision.org/media-centre/latest-news/803-academic-vision-centre-handed-over-in-malawi.html
. Accessed 10 Dec 2015.
4. Brien Holden Vision Institute. Vision centre development. 2015. Available at:
http://www.brienholdenvision.org/global-eye-care/vision-centre-development.html
. Accessed 10 De 2015.
5. Businessdictionary.com. Social enterprise. Business Dictionary. 2015. p. 1–7. Available at:
http://www.businessdictionary.com/definition/social-enterprise.html
. Accessed 8 Dec 2015.