IMAGE DISPLAY APPARATUS AND METHOD, AND STORAGE MEDIUM

There are provided an image display apparatus and an image display method, which are capable of clearly indicating to an observer subtle differences between two images of the same subject obtained at different times, without the need for complex image processing, and a storage medium storing a program for implementing the image display method. Two images of the same subject obtained at different times are inputted. A stereo display device displays the two inputted images in a manner enabling an observer to fuse the two inputted images together for stereoscopic viewing. A control means controls the stereo display device to display the two inputted images such that the two images are projected separately into the left and right eyes of the observer.