retinitis pig·men·to·sa (p g m n-t  s , -mn-)n. A hereditary degenerative disease of the retina, characterized by night blindness, pigmentary changes within the retina, and eventual loss of vision. [New Latin pigment sa, feminine of pigmentsus, pigmented.] |
retinitis pigmentosa (rtn- ts pgmn-ts) A hereditary degenerative disease of the retina, characterized by difficulty seeing at night, pigmentary changes within the retina, and eventual loss of vision. |
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