An image display apparatus (4) according to the present invention includes: a storage unit (14) which stores an image group (14a) including a same number of first and second images which have a coincident positional relationship with respect to a subject (1) and are respectively obtained through different image processes a display unit (12) which displays at least the first image in a display area (101) an input unit (13) which indicates a display switching area (107, 108) of the first image displayed in the display area (101) and a controller (15a) which controls the display unit (12) to keep displaying the first image in an image part outside the display switching area (107, 108) and to switch an image part inside the display switching area (107, 108) of the first image to an image part, having a coincident positional relationship with the image part inside the display switching area (107, 108) of the first image with respect to the subject (1), of the second image.
