Comparison of recording methods for ocular movement simulated by electrical simulation as intraoperative monitoring during endoscopic trans-sphenoidal surgery for pituitary tumor - Comparative study for ocular movement recording

Three modalities, free-run electrooculographic monitoring (EOG), piezoelectric sensor monitoring (PES) and trigger electromyographic monitoring (t-EMG) were assessed and compared to detect ocular movement during endoscopic endonasal surgery for pituitary tumors. As a result, there were significant differences among three modalities to detect oculomotor and abducent nerve. Both EOG and PES were higher detection power than t-EMG for oculomotor nerve and abducent nerve. These three modalities had safe methods.