What is retinitis pigmentosa?

Rare. Rare group of inherited (all types) retinal disease leading to blindness over years due to photoreceptor loss / cell death from various specific protein mutations affecting the retina and retinal pigment epithelium.
Inherited Disease. Retinitis pigmentosa is a group of inherited disorders that cause degeneration of the retina and vision loss. The condition can be inherited in multiple ways and has a variety of symptoms. The most common ones are night blindness and gradual loss of peripheral vision. There is currently no proven medical treatment, however the argus ii retinal implant may be useful in end stage disease.
Genetic disease. This is a genetic disease which induces gradual breakdown of the retina with progressive decreased vision and night blindness. This is progressive and few effective treatments exist - some have tried high dose vitamin a supplements. It is easily diagnosed with a dilated eye exam.