An electrically-powered visual display unit (VDU) designed as an output device for displaying data (e.g., patient images, videos) and as an input device to enable interactive manipulation of the data by the operator through touches to the display screen. It is intended to be connected to a computer or a medical device (i.e., the screen has no computing capabilities); it may be used to control a medical device (e.g., operating room lights) depending on parent device software. It is typically a portable or mounted liquid crystal display (LCD) or light-emitting diode (LED) unit, and may include an antimicrobial material to prevent cross-contamination in a medical setting.