Electrophysiology

Abstract Purpose To describe the diagnostic electrophysiological features associated with disorders that may present with positive phenomena. Methods Standardised electrophysiological testing, performed to incorporate and exceed the Standards of the International Society for Clinical Electrophysiology of Vision. Results Illustrative cases will be used to demonstrate diagnostic electrophysiological features in a variety of disorders. Conclusion The objective functional data provided by electrophysiological testing are of considerable importance to the diagnosis and management of these conditions.