Rod-cone dystrophy associated with a rod system electroretinogram obtained under photopic conditions.
A 14-year-old girl with a history of night blindness and poor visual acuity was examined. Cystic-appearing lesions were apparent in the fovea, and pigmentary changes were observed in the midperipheral retina. Electroretinograms (ERGs) recorded from the dark- and light-adapted eye were similar in waveform, implicit time, and approximate amplitude. Results of examination of the spectral characteristics of the light-adapted ERG demonstrated that the recordings represented activity of the rod system, despite the presence of a background field, which eliminates the response of the rod system in normal subjects.
Fishman
G A
GA
UIC Eye Center, Eye and Ear Infirmary, University of Illinois, Chicago College of Medicine 60612.
Peachey
N S
NS
D000221:Adaptation, Ocular; D000293:Adolescent; D004596:Electroretinography; D005260:Female; D005451:Fluorescein Angiography; D006801:Humans; D008027:Light; D009755:Night Blindness / Q000150:complications; D010775:Photic Stimulation; D012174:Retinitis Pigmentosa / Q000235:genetics; D014792:Visual Acuity; D058609:Visual Field Tests; D014794:Visual Fields