Retinitis pigmentosa is the name that has historically been given to a group of many forms of inherited retinal dystrophy, or degeneration. The retina is located at the back of the eye and is connected to the brain. It is made up of many millions of light-sensitive cells known as photoreceptor cells. These photoreceptor cells have the vital function of transmitting electrical impulses to the brain to enable seeing to take place. Retinal dystrophies are caused by the gradual breakdown of these photoreceptors.
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