831. The dull patch in a victim's eye shows where the parasitic worm transmitted by the black-fly's bite has caused irreparable damage. The only real answer to onchocerciasis is to wipe out the fly wherever there are human settlements Subject(s): World Health Organization
832. The face of desperation. River blindness has robbed this west African not merely of his sight but much of his earning power at an age when he should have been making his greatest contribution to the community Subject(s): World Health Organization
833. This man being led through a village in Upper Volta is blind as a result of river blindness - onchocerciasis - and nearly 60 per cent of the people in his village suffer from this disease Subject(s): ChildWorld Health Organization
834. 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
835. In districts heavily infected with onchocerciasis there are villages where all the adults are blind Subject(s): ChildWorld Health Organization
836. ... 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
837. 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
838. Onchocerciasis victim in the village of Tienkura, Upper Volta Subject(s): World Health Organization.
840. 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