A 47-year-old female with the presumptive diagnosis of cone dystrophy was presented for evaluation of chronic, mildly diminished visual acuity and dyschromatopsia. The patient reported that her vision has never been correctable to 20/20. The best visual acuity she remembers having is 20/30 in the left eye. Ocular History She was diagnosed with amblyopia in the right eye as a child and underwent a trial of patching at age ten.
She is anisometropic and her vision has always been worse in the right eye, presumably due to amblyopia. Family History She has several family members with mildly subnormal vision. Her mother, brother, sister, and son all have mildly reduced vision, in the range of 20/30 to 20/50.All of the affected family members are able to drive. Ocular exam Visual Acuity (with corrective lenses): Right eye -- 20/70; Left eye -- 20/40 Current spectacle correction: Right eye:…
