Figure 7. Electroretinograms (ERGs) from six patients with the same mutation (c.531T>G) and normal controls. Four patients [F,II-1 (42
years); G,III-3 (17 years); O,II-1 (30 years); P,II-1 (41 years)] showed a b/a ratio <1 on the DA 3.0 ERG, while the two other
patients [F,I-2 (52 years); G,III-2 (18 years)] had a b/a >1. Only the left eye was tested (small dashed line) in patient
G,III-3 (17 years) because the right eye had phthisical changes after vitreoretinal surgery for retinal detachment. Solid
lines represent average traces of the right eyes, and small dashed lines represent the average traces of the left eyes.