Provided is a three-dimensional (3D) image display apparatus and method including: a display; a photographing unit including a camera, a first light source disposed on an axis identical to a camera axis and a second light source disposed on an axis different from the camera axis, which takes a photograph of an observer using light emitted from the first and second light sources, and generates first and second images; an eye information detection unit which detects eye information of the observer based on the first and second images and determines a position of the observer based on the detected eye information; and a 3D image adjustment unit which adjusts a 3D image, which will be displayed on the display, based on the determined position of the observer.
3D image display apparatus and method using detected eye information