Retinitis pigmentosa (RP) is an inherited, degenerative eye disease that causes severe vision impairment and blindness. Sufferers will experience one or more of the following symptoms: Night blindness or nyctalopia; Tunnel vision (no peripheral vision); Peripheral vision (no central vision); Latticework vision; Aversion to glare; Slow adjustment from dark to light environments and vice versa; Blurring of vision; Poor color separation; and Extreme tiredness. The progress of RP is not consistent. Some people will exhibit symptoms from infancy, others may not notice symptoms until later in life. Generally, the later the onset, the more rapid is the deterioration in sight. Also notice that people who do not have RP have 90 degree peripheral vision, while some people that have RP have less than 90 degree.
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