A diagnosis supporting device according to an embodiment is configured as follows in order to improve diagnostic accuracy. The diagnosis supporting device includes an imaging unit that images a subject, an eye gaze detector that detects an eye gaze direction of the subject from an image captured by the imaging unit, a gaze point detector that detects a gaze point of the subject in a display area of a display based on the eye gaze direction； and an output controller that causes the display area to display a diagnostic image composed by superposing a pattern image onto a natural image.
