retinitis pigmentosa, a genetic eye disease leading to vision loss. an shows pigment depositis in the

retinitis pigmentosa pigment deposit retina bone spicules disk disorder dystrophy epithelium eye fovea fundoscopic fundoscopy fundus genetic hereditary illustration investigation lipofuscin macula macular medical ocular ophthalmologist ophthalmology ophthalmoscopy optic cup organ patient progressive rare disease recessive retinal retinoscopy vessel vision loss attentuation blood vessels waxy decreased night nyctalopia degenerative