The prevention of blindness from trachoma.
D000818:Animals; D001424:Bacterial Infections / Q000150:complications; D001766:Blindness / Q000209:etiology / Q000517:prevention & control*; D002690:Chlamydia Infections; D002692:Chlamydia trachomatis; D003231:Conjunctivitis / Q000453:epidemiology / Q000209:etiology; D004197:Disease Reservoirs; D004199:Disease Vectors; D049672:History, 19th Century; D006801:Humans; D007492:Iran; D007493:Iraq; D008131:London; D009885:Ophthalmology / Q000266:history; D012499:Sanitation; D012725:Sexual Behavior; D014141:Trachoma / Q000150:complications* / Q000453:epidemiology / Q000266:history; D014611:Vaccination