1. World Health Organization. Visual impairment and blindness. 2012. Available at: http://www.who.int/mediacentre/factsheets/fs282/en/.
2. When your eye patient is a child;Chandna;Community Eye Health,2010
3. Global estimates of visual impairment: 2010;Pascolini;Br J Ophthalmol,2011
4. Childhood blindness in the context of VISION 2020—the right to sight;Gilbert;Bull World Health Organ,2001
5. National registry for the blind in Israel: estimation of prevalence and incidence rates and causes of blindness;Farber;Ophthalmic Epidemiol,2003