An image display apparatus of the present invention includes: a display panel; a storage unit that stores a plurality of correction values which are used for correction processing for decreasing brightness variation; a correction unit; and a control unit, wherein the control unit divides the display panel into a plurality of sub-areas, calculates, for each sub-area, a select block gradation value, and executes, for each sub-area, a control to read correction values, which are used for calculating a correction value corresponding to the select block gradation value, out of the plurality of correction values, using the correction unit, and the correction unit calculates, for each sub-area, a correction value corresponding to the select block gradation value using the read correction values, and converts gradation values of video signals in the sub-area using the calculated correction value.