study on pattern visual evoked response in papillitis and papilledema

ABSTRACT

Pattern VER was recorded from 30 eyes [20 patients], 14 eyes with papillitis [12 patients] and 16 eyes with early papilloedema due to benign increase of intracranial pressure [8 patients]. VER was recorded at time of presentation and after recovery, in active papillitis VER was present, with increased latency in 92.86 percent of cases and diminished amplitude in all cases. After recovery, latency remained high in 85.79 percent of cases while amplitude returned to normal in 92.79 percent of cases. So VER can be useful in the follow up of cases of papillitis and to evaluate the effectiveness of medical treatment. In cases of early papilloedema VER was present but with values which were more or less normal during the active disease [all cases were normal and after recovery [81.25 percent] of cases were normal]. Therefore, VER can be used with other clinical tests to differentiate papillitis from papilloedema because, VER alone is still not decisive and the interpretation of its results are still difficult