Operating Device with Eye Tracker Unit and Method for Calibrating an Eye Tracker Unit of an Operating Device

The invention relates to a method for calibrating an eye tracker unit of an operating device, wherein at least one apparatus is controlled by means of the operating device depending on at least one user input and wherein, in the case of the method, at least one graphical element is displayed respectively by a control unit of the operating device in at least one predetermined usage step of the operating device and at least one piece of viewing direction information is determined by means of the eye tracker unit for the user viewing a screen. The invention provides that, from the at least one displayed element, an optically salient element, on which the user must focus with their eyes in order to successfully perform the usage step, is established, and calibration data for the calibration of the eye tracker unit is generated depending on a display position of the optically salient element on the screen and depending on the at least one piece of viewing direction information.