1. Available data on blindness (update 1994)
2. Magnitude and causes of blindness in the developing world
3. Resnikoff S, Pascolini D, Etya'Ale D, Kocur I, Pararajasegaram R, Pokharel GP, Mariotti SP. Global data on visual impairment in the year 2002. Bulletin of the world health organization. 2004;82(11), 844-851.
4. 2002 Global update of available data on visual impairment: a compilation of population-based prevalence studies
5. Avetisov SE, Egorov EA, Moshetova LK, Neroev VV, Tahchidi HP. Oftal'mologiya: nacional'noe rukovodstvo. M.: GEOTAR-Media; 2014. (In Russ.)