A display program that causes a computer to execute a procedure, the procedure comprising: calculating a position (P, P1, P2) of a line of sight of a user in a display screen of a display device, based on information on an eyeball portion of the user included in an input image; the procedure further comprising: setting a processing target region which is a target region of processing corresponding to an input operation by a line of sight and an operation region (BO1,... BO8) which is adjacent to the processing target region and the operation region is for receiving the input operation by the line of sight, in the display screen, the setting being based on the position (P, P1, P2) of the line of sight and information on a field of view of the user; setting a plurality of operation regions (BO1,... BO8) outside the processing target region; creating screen data in which image information within the processing target region is included in image information within the operation region (BO1,... BO8) and which is to be displayed on the display device; and the image information within the processing target region being included only in the image information within the operation region (BO1,... BO8), which includes the position (P, P1, P2) of the line of sight among the plurality of operation regions (BO1,... BO8), wherein the input operation by the line of sight includes an operation of changing a positional relationship between a predetermined object displayed within the processing target region and another object (801,... 807) based on a positional relationship between the operation region and the target region. calculating a position (P, P1, P2) of a line of sight of a user in a display screen of a display device, based on information on an eyeball portion of the user included in an input image; the procedure further comprising: setting a processing target region which is a target region of processing corresponding to an input operation by a line of sight and an operation region (BO1,... BO8) which is adjacent to the processing target region and the operation region is for receiving the input operation by the line of sight, in the display screen, the setting being based on the position (P, P1, P2) of the line of sight and information on a field of view of the user; setting a plurality of operation regions (BO1,... BO8) outside the processing target region; creating screen data in which image information within the processing target region is included in image information within the operation region (BO1,... BO8) and which is to be displayed on the display device; and the image information within the processing target region being included only in the image information within the operation region (BO1,... BO8), which includes the position (P, P1, P2) of the line of sight among the plurality of operation regions (BO1,... BO8), setting a processing target region which is a target region of processing corresponding to an input operation by a line of sight and an operation region (BO1,... BO8) which is adjacent to the processing target region and the operation region is for receiving the input operation by the line of sight, in the display screen, the setting being based on the position (P, P1, P2) of the line of sight and information on a field of view of the user; setting a plurality of operation regions (BO1,... BO8) outside the processing target region; creating screen data in which image information within the processing target region is included in image information within the operation region (BO1,... BO8) and which is to be displayed on the display device; and the image information within the processing target region being included only in the image information within the operation region (BO1,... BO8), which includes the position (P, P1, P2) of the line of sight among the plurality of operation regions (BO1,... BO8), wherein the input operation by the line of sight includes an operation of changing a positional relationship between a predetermined object displayed within the processing target region and another object (801,... 807) based on a positional relationship between the operation region and the target region.