641. 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
642. A victim of onchoceriasis, not yet 40 years old, being led by a child Subject(s): World Health Organization
643. [A patient is being assisted while walking shortly after eye surgery] Subject(s): BandagesPatientsWorld Health Organization
644. In the ophthalmological hospital of Sitapur, India, up to 200 patients can be operated a day in the cataract season. The Sitapur Eye Hospital, directed by Dr. H.L. Patney, is set up for "assembly-line" operations: cataract, squint, glaucoma, corneal graft, etc Subject(s): Operating RoomsOphthalmologyCataract ExtractionWorld Health Organization
645. The surgical instrument used here for a cataract operation ... is known as a cryoprobe Subject(s): OphthalmologySurgical InstrumentsCataract ExtractionWorld Health Organization
646. ... the injection of a contrast medium (usually iodine compound) via a flexible tube Subject(s): Cardiovascular DiseasesWorld Health Organization
647. [Miniature transmitter used to monitor heartbeats] Subject(s): Cardiovascular DiseasesEquipment and SuppliesWorld Health Organization
648. The sound of the dog's heartbeats is picked up by a microphone stuck to his fur Subject(s): Cardiovascular DiseasesEquipment and SuppliesWorld Health Organization
649. The passage of the dye through the blood vessels is recorded by two small photo-electric cells Subject(s): Cardiovascular DiseasesEquipment and SuppliesWorld Health Organization
650. Congenital malformations of the heart originate in the embryo Subject(s): Cardiovascular DiseasesWorld Health Organization