Figure 4. Spectral domain high-definition optical coherence tomography and electro-oculogram findings of patient FG10, patient FG05 and patient FG04. Spectral domain high-definition optical coherence tomography scan of the right eye of patient FG10 (A, upper panel) shows normal macular findings. Electro-oculogram of the same eye (A, bottom panel) shows the light-peak saccade not uniform, being the light-peak to dark-trough ratio overall normal (>1.55). Electro-oculograms of the right eye of patient FG05 (B), and of the left eye patient FG04 (C), show normal light-peak to dark-trough ratio (>1.55).