| umls-concept:C0035334 | skos:definition | MSH: Hereditary, progressive degeneration of the neuroepithelium of the retina characterized by night blindness and progressive contraction of the visual field.,CSP: group of inherited abnormalities in the retina; characterized by night blindness, retinal atrophy, weakening of the retinal vessels, pigment clumping, and contraction of the visual field.,NCI: A rare inherited retinal dystrophy disorder characterized by spots of black bone-spicule pigmentation of the retinal pigment epithelium. It is manifested with decreased vision in low light or in the night, followed by decreased peripheral vision, and, eventual decreased central vision. It may lead to blindness. | lld:umls |
