About 300,000 people are blind because of the parasitic worm Onchocerca volvulus from biting black flies and another 800,000 have a visual impairment. Nearly 99% of infected persons live in Africa.
For centuries, married South African Ndebele tribes’ women saw wearing heavy rings around their neck as an honored status symbol. Neck rings are any form of stiff necklaces worn around the neck of an ...