River Blindness

River blindness or Onchocerciasis is a disease caused by the parasite Onchocerca volvulus and transmitted through the bite of Simulium mosquitoes. This disease is one of the leading causes of blindness in developing countries where it is common.

Onchocerciasis is mainly distributed in Western and Central Africa, as well as in Central and South America. In some areas of Africa, the disease affects up to 90% of the population. Factors that contribute to the spread of Onchocerciasis include a lack of clean water, poor sanitation, and proximity to rivers and streams that harbor mosquitoes that transmit the parasite.

The main symptom of the disease is itching, which is caused by migrating worms under the skin. With prolonged course of the disease, blindness may occur, which becomes irreversible. Damage to the skin and bones is also noted.

To prevent onchocerciasis, insecticides and drug therapy are used. In some cases, surgical removal of the worms is performed. However, the most effective way to combat the disease is to use mass prevention, which consists of providing free drugs to the population living in endemic areas.

In summary, River blindness or Onchocerciasis is a serious problem in developing countries, but it can be prevented and treated with timely diagnosis and treatment. Measures to prevent and treat this disease should be actively promoted to prevent negative consequences for public health.



River blindness, also known as Onchocerciasis, is one of the most common types of blindness caused by a parasitic infectious disease. This disease is caused by nematodes that enter the human body through mosquito bites.

The main source of spread of Onchocerciasis are rivers and streams, especially in the tropical and subtropical regions of Africa and South America. When a person becomes infected with nematodes, they begin to multiply in his tissues, causing inflammation and damage to the eye. Manifestations of the disease can range from mild itching and rash to severe blindness.

Onchocerciasis can lead to complications such as cataracts, glaucoma and an increased risk of developing other infections such as human immunodeficiency virus (HIV) and malaria. The disease can be prevented through regular treatment with medications that kill the hookworms and prevent re-infestation.

However, in regions where Onchocerciasis is endemic, access to medications may be limited, which in turn increases the risk of infection and leads to the spread of the disease. Therefore, in addition to drug treatment, prevention of Onchocerciasis also includes improved hygiene and sanitation, control of insect vectors, public education and other measures.

River blindness is a serious threat to the health and lives of people in regions where it is endemic. However, thanks to modern diagnostic and treatment methods, as well as improved living conditions and sanitation, it is possible to reduce the risk of infection and prevent the spread of this disease.



River Blind

One of the most common and dangerous eye diseases is River Blindness. This rare disease is called onchocerciasis. According to WHO, about 8 million people are infected with it every year, but as a result of competent prevention, WHO in 2011 classified this disease as