抄録
Endoscopic sinus surgery is generally performed as the means of treating inflammation of the sinus. However, there are risks that the tip of endoscope enters in the eyepit, and the eyeball and the optic nerve are damaged. In this study, the vibration of the eyeball caused by a surgical tool for endscopeic endonasal sinus surgery was measured with a Poly Vinyliden DiFluoride (PVDF) film during surgery. The eyeball showed characteristic vibration when the surgical tool was getting closer to the eyepit. In order to examine the difference of the vibration between right and left eyeballs, the vibration of the eyeball was analyzed by FFT, STFT, and panpot analysis. The result suggest that the frequency spectrum show different patterns according to the types of surgical tool, and the panpot spectra indicate to which eyepit the surgical tool is getting closer. The developed program can estimate the position of the surgical tool and analyze its frequency of vibration at the same time.
