title: Cataract prevalence study in Bulgaria.
authors: Sofia District Hospital, Institute of Ophthalmology, Bulgaria.
authors: T
authors: T
authors: Parvova-Djurova
authors: P
authors: P
authors: Vassileva
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002031:Bulgaria; D002386:Cataract / Q000453:epidemiology* / Q000209:etiology; D002387:Cataract Extraction / Q000706:statistics & numerical data; D004812:Epidemiologic Methods; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012307:Risk Factors; D012424:Rural Population; D013472:Sunlight / Q000009:adverse effects; D014505:Urban Population