AbstractThe presentation will utilise a case‐based approach to address management issues in the patient with involuntary eye movements. Accurate prognostic information can only be given when an accurate diagnosis has been established. Electrophysiological examination facilitates diagnosis, and helps distinguish between stationary and progressive disorders, and those disorders which are relatively benign from progressive blinding disorders. Characteristic ERG changes can also enable appropriate genetic screening even in patients with atypical clinical features.