O177 Novel method of intraoperative ocular movement monitoring using a piezoelectric device: Experimental study of OMNAPP (ocular motor nerve activating piezoelectric potentials) and clinical application for skull base surgeries

Intraoperative monitoring for the extraocular motor nerves (eOMNs) using electromyograms are not widely accepted due to their inherent invasiveness. We established a novel system for the intraoperative monitoring of eOMNs using a piezoelectric device capable of detecting imperceptible vibrations induced by ocular movement, with sensors placed on the eyelids alone.

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