The present invention provides an image display system with which it is possible to effectively utilize information pertaining to an image gaze duration, a head-mounted-display control device, and a method and program for actuating the same. A display control unit (80) causes a stored image list screen (45) having a list (44) of stored images (43) to be displayed on a head-mounted display (11). Adetection unit (73) detects the gaze of a user (13) with respect to the stored images (43) on the basis of a captured image (85) from a gaze detection camera (29) of the head-mounted display (11). A time-keeping unit (74) measures the duration of the gaze of the user (13) with respect to the stored images (43). An evaluation unit (75) replaces the gaze duration with the degree of interest of the user with respect to the stored images (43) on the basis of an evaluation standard (62). An information acceptance unit (76) accepts the degree of interest as gaze duration information. An informationmanagement unit (77) records the image IDs of the stored images (43) and the degree of interest in association with each other in a storage device (50) as image interest degree information (63).
Image display system, head-mounted-display control device, and method and program for actuating same