Onchocerciasis, commonly known as ‘river blindness,’ is caused by the parasitic worm Onchocerca volvulus. The worm is carried by black flies.
Blood-Sucking Fly That Can Cause Human Blindness Identified In Darjeeling, Kalimpong

Onchocerciasis, commonly known as ‘river blindness,’ is caused by the parasitic worm Onchocerca volvulus. The worm is carried by black flies.