What is retinitis pigmentosa? The eye is often compared to a camera. The front of the eye contains a lens that focuses images on the inside of the back of the eye. This area, called the retina, is covered with special nerve cells that react to light. These nerve cells include the rods and cones. The rods and cones react to light because they contain pigments that change color when light strikes them. In some people, however, there is a problem with these pigments. The rods (and sometimes the cones) gradually stop working, and the retina begins to deteriorate. There are several kinds inherited medical conditions that can cause this problem, which is called retinitis pigmentosa. According to The Foundation Fighting Blindness, there are about 100,000 people with retinitis pigmentosa in the United States. Today, doctors know a lot about how the condition is inherited, but researchers are still trying to find out exactly why certain combinations of genes cause retinitis pigmentosa. Someone with retinitis pigmentosa will notice gradual changes in vision, including: Retinitis pigmentosa usually affects both eyes. In some forms of the condition, vision continues to get worse. In other types of retinitis pigmentosa, only a small area … Continue reading
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