Phenotype details |
An 8-year-old girl presented with a 4-month history of progressively worsening central vision. In retrospect, the parents noticed vision problems as early as 6 years of age. On examination, her color vision was markedly abnormal with 0/15 and 2/15 Ishihara color plates correctly read with the right and left eyes, respectively. Her visual acuity was 20/200 for both eyes and Goldmann perimetry demonstrated bilateral paracentral/central scotomas. Fundus examination demonstrated minimal macular stippling with no evidence of pisciform flecks in the periphery. The clinical diagnosis of Stargardt macular dystrophy was made and the patient underwent ERG testing, which demonstrated a moderate reduction of the dark-adapted responses of rods and severely depressed and prolonged photopic responses including the 30 Hz flicker. |