L'endoscope est l'œil du chirurgien. Grâce à une micro-caméra, ce système optique amène l'image de la cavité corporelle jusqu'à l'écran, au moyen d'un système de lentille. Les endoscopes modernes demandent une stérilisation chimiques et de l'autoclavage. Des conteneurs pour optiques spécialement développés sont disponibles pour protéger les lentilles fragiles.
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