Head-mounted display and control apparatus and method

An apparatus and method for displaying an operational area, the apparatus comprising a headset (10) for placing over a user's eyes, the headset including a viewing device (12) configured to provide to said user, in use, a view of a real-world environment, a display generating device for depicting an operational area, said operational area being defined within said real-world environment and comprising a plurality of functional regions each defining a different one or more selectable functions or operations that can be performed in respect of said operational area, the apparatus being configured to transfer image data from said display generating device into said user's view of said real-world environment at said viewing device to generate an augmented reality environment, the apparatus further comprising a control module (26) including a control device (28) configured to be selectively communicably coupled to all of said functional regions to enable a user to selectively perform the respective one or more functions or operations associated therewith, wherein the control device (28) is communicably coupled to a selected functional region only in response to a respective actuation signal, and an eye tracker module (24) configured to monitor said user's gaze relative to said augmented reality environment, in use, and, when said user's gaze is directed at a selected functional region displayed therein, generate and transmit to said control module (26) a said actuation signal and when said user's gaze is no longer directed at said selected functional region, cause said control device (28) to be decoupled therefrom.