Figure 4. ERG results for the c.626G>C, c.121delG, and to c.529–530delGCinsAT probands and for a normal control. The subjects with the c.626G>C and c.121delG mutations show a complete absence of rod pathway function and a diminished cone waveform. The subject with the c.529–530delGCinsAT mutation shows normal rod pathway function and a slightly diminished cone waveform.