Insight Instruments MIS ( Multi-Port Illumination System) || Illuminated pilot tubes work like a ceiling light while simultaneously protecting the entry sites. Illumination automatically follows the movement of the two surgical instruments inserted into the M.I.S. cannulas. The large distance of more than 16mm between cannula ends and posterior pole guarantees sufficient light in the working area and a large observation field especially when used in conjunction with modern wide field panoramic observation systems.