title: Progressive human cone-rod dysfunction (dystrophy).
abstract: The author has classified progressive human cone-rod dysfunction into primary and secondary types. The primary type, identified by early ERG cone and usually also rod abnormalities, was further subdivided into types 1 and 2 based on, amoung other distinguishing characteristics, the extent of associated retinal pigment epithelial defects. Secondary cone-rod dysfunction apparently results from disease initially affecting the retinal pigment epithelium. Initially normal ERG findings and the presence of flecks characterize this (type 3) progressive cone-rod dysfunction.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D003117:Color Vision Defects / Q000503:physiopathology*; D004596:Electroretinography; D005451:Fluorescein Angiography; D005584:Fovea Centralis / Q000473:pathology; D005654:Fundus Oculi; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D010786:Photoreceptor Cells / Q000503:physiopathology*; D012160:Retina / Q000473:pathology; D012164:Retinal Diseases / Q000145:classification / Q000473:pathology / Q000503:physiopathology*