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About Retinitis Pigmentosa
Retinitis Pigmentosa:
Retinitis Pigmentosa (RP) is a group of inherited disorders characterized by progressive peripheral vision loss and night vision difficulties (nyctalopia) that can lead to central vision loss.
Retinitis Pigmentosa, an eye disease which affects a person's night vision and peripheral vision, is a genetic disorder that is usually hereditary. Symptoms start with decreased night vision and later progress to a diminishing of peripheral vision. The rate of decline varies depending on the genetic makeup of the disorder and also varies somewhat in individuals.
The prevalence of typical RP is reported to be approximately 1 in 4000 in the United States. The carrier state is believed to be approximately 1 in 100. The highest reported frequency of occurrence for RP is among the Navajo Indians at 1 in 1878.
