An image display apparatus includes: an illumination unit having a light source block including a plurality of light sources; a display unit which displays an image on the basis of an image signal; a plurality of measurement units which measure the brightness of light arriving from the light source block, at a plurality of measurement positions; a storage unit which stores brightness information relating to an initial brightness of light arriving from the light source block, at at least the plurality of measurement positions; a setting unit which adjusts alight emission amount of the light source block on the basis of the brightness information, and measurement results when the light source block is lit; and a correction unit which corrects the image signal on the basis of the brightness information, the measurement results, and the adjusted light emission amount of the light source block.