Noun
retinitis pigmentosa (uncountable)
An inherited degenerative eye disease that causes severe vision impairment and often blindness.
In humans, the therapy would be administered as a single injection into the eye for elderly people with age-related macular degeneration and retinitis pigmentosa (RP). Source: Internet
The mutation accounts for approximately 70 percent of all cases of X-linked retinitis pigmentosa, which causes night blindness in early childhood followed by progressive daytime vision loss. Source: Internet