1. World Health Organization. Visual impairment and blindness.http://www.who.int/mediacentre/factsheets/fs282/en/. 2012. Accessed February 2013.
2. Changing challenges in the control of blindness in children
3. Global estimates of visual impairment;Pascolini D;Br J Ophthalmol,2011
4. Childhood blindness in the context of VISION 2020—The right to sight;Gilbert C;Bull World Health Organ,2001
5. Statistics New Zealand Tatauranga Aotearoa. QuickStats About. 2013 Census New Zealand.http://www.stats.govt.nz/Census/2013-census/profile-and-summary-reports.aspx. Accessed June 26 2014.