Supplementary visual display system

There is provided a supplementary visual display system (10,200) for use in conjunction with a display device (40) including an image display region (50) for presenting images to a viewer (15). The system (10,200) comprises: (a) one or more illumination sources (100a, 100b,110,120) which at least partially peripherally surround the image display region (50) and/or project illumination radiated therefrom so as to illuminate a region visually appearing to the viewer (15) to at least partially peripherally surround the image display region (50); ; (b) monitoring components for monitoring audio program content and/or intensity and/or color and/or depth information in the entire image display region (50) or in one or more sub-regions (300,310,320,330) of the image display region (50) when images are presented thereon and generating corresponding image and/or audio indicative signals: and (c) controlling components (500) for controlling light radiation emitted in use from the one or more illumination sources (100a, 100b,110,120) in response to at least one of the image and/or audio indicative signals so as to provide at least a partial spatial extension of the image display region (50).