title: [Methodical approach to the study of prevalence of blindness among population].
mesh_terms: D001766:Blindness / Q000453:epidemiology*; D005260:Female; D006801:Humans; D008297:Male; D012423:Rural Health; D012800:Siberia; D014505:Urban Population
vernacular_title: O metodicheskikh podkhodakh v issledovanii rasprostraneniia slepoty sredi naseleniia