Figure 5. Progress of ocular and extraocular signs in patients with the DOA-plus phenotype. The horizontal axis shows age. Visual disturbance
preceded auditory disturbance in all cases. In Case 2, the symptoms of vestibular dysfunction and ataxia followed those of
auditory disturbances. Cases 2 and 3 had PEO, but we did not show it in the figure because the onset of PEO was not clear
in either patient.