Detection of Forceps Contact to Retinal Model by Using Digital Image Correlation for Eye Surgical Simulator

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  • デジタル画像相関法を用いた眼底手術訓練用網膜モデルへの鉗子の接触検出

Abstract

<p>Training vitreoretinal surgeries such as peeling of inner limiting membrane require a surgical simulator with elaborate retinal model and contact detection method. Quantitative evaluation of forceps contacts to the retinal model because excessive forceps contact might cause loss of eyesight. This paper reports the detection method using the digital image correlation for forceps contact to the retinal model. An evaluation system for forceps contact detection was constructed. This system has an optical system incorporating 850 nm LED, a CCD camera, infrared pass filter under a retinal model. This system detects the forceps tip and forceps contact to the retinal model from the change of correlation coefficient between the initial and measured images. From the evaluation result, the forceps contact was detected at a load of less than 0.1 mN.</p>

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