Avoidable blindness.
Thylefors
B
B
D001766:Blindness / Q000453:epidemiology / Q000209:etiology* / Q000517:prevention & control*; D002386:Cataract / Q000150:complications; D014943:Global Health; D006801:Humans; D014141:Trachoma / Q000150:complications; D014944:World Health Organization