281. ... 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
282. 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
283. Onchocerciasis victim in the village of Tienkura, Upper Volta Subject(s): World Health Organization.
285. 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
286. A victim of onchoceriasis, not yet 40 years old, being led by a child Subject(s): World Health Organization
287. [A patient is being assisted while walking shortly after eye surgery] Subject(s): BandagesPatientsWorld Health Organization
288. The surgical instrument used here for a cataract operation ... is known as a cryoprobe Subject(s): OphthalmologySurgical InstrumentsCataract ExtractionWorld Health Organization
289. ... the injection of a contrast medium (usually iodine compound) via a flexible tube Subject(s): Cardiovascular DiseasesWorld Health Organization
290. [Miniature transmitter used to monitor heartbeats] Subject(s): Cardiovascular DiseasesEquipment and SuppliesWorld Health Organization