While there are a number of retinal diseases where the electrophysiological test results are distinctive and often highly characteristic, the usual case undergoing evaluation needs to have other parameters assessed in order for a diagnosis to be reached. Typically, the diagnostic information considered includes the age of onset, inheritance pattern, symptoms, and morphological changes as seen on examination or in photographs; these are correlated with the results of electrophysiological and psychophysical testing.

One test that normally might not be thought to be of much value in electrodiagnosis is fluorescein angiography (FA) and fundus photography (FP). However, there are a number of situations where the FA and FP can strongly support or give the correct diagnosis. On occasion, additional information is learned about the disease process that may have clinical importance.