Line-of-sight detection apparatus and a line-of-sight detection method

A gaze detection apparatus is disclosed. The gaze detection apparatus includes: a gaze detection section that detects gaze of a target person; a display section that includes a display screen for displaying an image; a gaze position determination section that determines, based on a result of detection by the gaze detection section, whether or not the display screen lies in the gaze of the target person; and a first display control section that displays a first detection result image at an intersection point between the gaze of the target person and the display screen when the first gaze position determination section determines that the display screen lies in the gaze of the target person.