Human diseases night blindness

Health benefits — Research reports indicate that natural (3-carotene possesses numerous benefits for the human body and consistently supports the use of (3-carotene as part of the human diet. The human body converts (3-carotene to vitamin A via body tissues as opposed to the liver, hence avoiding a build-up of toxins in the liver. Vitamin A is essential for the human body in that it assists the immune system and helps battle eye diseases such as cataracts and night blindness, various skin ailments such as acne, signs of aging, and various forms of cancer. 

O. volvulus. This is the causal organism of human onchocerciasis, which is a disease of the skin and eyes. This disease affects between 20 and 40 million people in the world, frequently causing blindness and skin pathology. The tropical zones most affected are Africa, Guatemala and Mexico. A mild form of the disease threatens to spread in tropical South America. The microfilariae circulate in the peripheral blood day and night. Many mosquitoes, such as Culex, Anopheles, Mansonia, Aedes, and Simulium Spp., are vectors for this and other types of filariasis. 

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