Evaluation of pattern ERG as a visual prognosticator in chiasmatic tumours

Abstract

Pattern electroretinogram may not be a useful prognostic indicator in the preoperative assessment of tumours causing chiasmal compression. An abnormal N2/P1 ratio is not necessarily associated with lesser or no clinical improvement following surgery as compared to an eye with a normal pattern electroretinogram.

Factors Affecting Visual Field Outcome Post-Surgery in Sellar Region Tumors: Retrospective Study

“…Berkmann, Fandino, Zosso et al (33) has used intraoperative Magnetic Resonance Imaging finding of optic nerve to prognosticate post operative visual deficits in sellar tumors. A study on preoperative pattern electroretinogram for chiasmal tumors as a prognosticator but found no association with pre and post operation VF (37).…”