An image display apparatus comprising: a laser light source unit; a scan mirror unit configured to reflect laser beams output from the laser light source unit and scan the light beams; a rendering control unit configured to control the laser light source unit in such a way that a display image is rendered in a range being smaller than a scan range of the scan mirror unit based on input display image data, wherein the display image comprises predetermined divided areas each having display content having a predetermined importance; a gaze range detecting unit configured to divide the display image to be rendered into predetermined divided areas (502, 504, 506, 511a-i) according to a predetermined division mode, obtain degree of gaze parameters for each of the divided areas (502, 504, 506, 511a-i), wherein the degree of gaze parameters are set based on the predetermined importance of the display contents for the respective divided area (502, 504, 506, 511a-i), find the divided area (502, 504, 506, 511a-i) having the highest degree of gaze parameter and identify an auto power control area (208a-h) outside the range where the display image is rendered in the scan range of the scan mirror unit and most distant from the divided area (502, 504, 506, 511a-i) having the highest degree of gaze parameter; and an output adjusting control unit configured to control the laser light source unit in such a way that the laser beams for adjusting the output of the laser beams are output at a position outside the range where the display image is rendered in the scan range of the scan mirror unit, and the position being in the auto power control area (208a-h) identified by the gaze range detecting unit. a laser light source unit; a scan mirror unit configured to reflect laser beams output from the laser light source unit and scan the light beams; a rendering control unit configured to control the laser light source unit in such a way that a display image is rendered in a range being smaller than a scan range of the scan mirror unit based on input display image data, wherein the display image comprises predetermined divided areas each having display content having a predetermined importance; a gaze range detecting unit configured to divide the display image to be rendered into predetermined divided areas (502, 504, 506, 511a-i) according to a predetermined division mode, obtain degree of gaze parameters for each of the divided areas (502, 504, 506, 511a-i), wherein the degree of gaze parameters are set based on the predetermined importance of the display contents for the respective divided area (502, 504, 506, 511a-i), find the divided area (502, 504, 506, 511a-i) having the highest degree of gaze parameter and identify an auto power control area (208a-h) outside the range where the display image is rendered in the scan range of the scan mirror unit and most distant from the divided area (502, 504, 506, 511a-i) having the highest degree of gaze parameter; and an output adjusting control unit configured to control the laser light source unit in such a way that the laser beams for adjusting the output of the laser beams are output at a position outside the range where the display image is rendered in the scan range of the scan mirror unit, and the position being in the auto power control area (208a-h) identified by the gaze range detecting unit.