Abstract: A remote control unit for use with an ophthalmic surgical system having a main control console with video display screen and operator interface. The remote controller is connected by an electrical umbilical cord to the main console and provides a second operator display and membrane-switch interface for use by a surgeon or other member of the surgical team. This remote control unit has its own housing with a splash-resistant front face that is divided into primary and secondary operator interface panels. The primary panel includes a rectangular display field having a plurality of back-illumination lights for selectively illuminating legends found on a replaceable legend card that fits within a slot behind the face plates. Control functions corresponding to the illuminated legends may be selected or de-selected by pressing nearby switches arranged in locations adjacent to the display field. The secondary panel also contains membrane switches and legends illuminated by back-lighting.