A medical system which allows a surgeon to easily grasp a cause when a sight line is not recognized, and allows the surgeon to concentrate on an operation is provided. A medical system 1 has peripheral apparatuses 2, a sight line operation screen 3a in which a command area 31 for instructing operation of the peripheral apparatuses 2 is displayed, a sight line measuring apparatus 15 configured to detect sight line position coordinates of an operator, a sight line recognition level calculation section 23 configured to calculate an extent of sight line recognition by the sight line measuring apparatus 15, and a sight line recognition level display area 38 configured to display a calculation result of the sight line recognition level calculation section 23 on the sight line operation screen 3a.
