571. One of the telltale sings of onchocerciasis is the fibrous nodule which forms under the victim's skin. This child of two already has such a nodule on his head Subject(s): MothersMother-Child RelationsChildWorld Health Organization
572. In districts heavily infected with onchocerciasis there are villages where all the adults are blind Subject(s): ChildWorld Health Organization
573. ... villagers of Djipologo, Upper Volta, who have lost their sight due to onchocerciasis Publication: [1950-1965?] Subject(s): Onchocerciasis, Ocular -- epidemiologyBlindnessEye DiseasesBurkina FasoWorld Health Organization
574. For many thousands of West African onchocerciasis is a reality that leaves an unhappy legacy of damaged or destroyed eyesight Publication: 1978 Subject(s): Onchocerciasis, OcularEye DiseasesBlindnessAfrica, WesternWorld Health Organization
575. Onchocerciasis victim in the village of Tienkura, Upper Volta Subject(s): World Health Organization.
577. Simulium larvae, enlarged to seven times life-size. After seven or eight days the larva develops into a chrysalis, and finally the adult blackfly emerges. Control of onchocemiasis depends on destroying the larva before the chrysalis stage is reached; after that, the insecticide is less effective Subject(s): World Health Organization
578. A victim of onchoceriasis, not yet 40 years old, being led by a child Subject(s): World Health Organization
579. [A patient is being assisted while walking shortly after eye surgery] Subject(s): BandagesPatientsWorld Health Organization
580. The surgical instrument used here for a cataract operation ... is known as a cryoprobe Subject(s): OphthalmologySurgical InstrumentsCataract ExtractionWorld Health Organization