PROBLEM TO BE SOLVED: To improve accuracy of diagnosis.SOLUTION: A diagnosis assistance device comprises: a display part: an imaging part which picks up images of a subject； a line-of-sight detecting part which detects the direction of a line of sight of the subject from the picked-up image picked up by the imaging part； a view point detecting part which detects the view point of the subject in a display area of the display part on the basis of the direction of the line of sight； an output control part which displays a diagnostic image which contains a person image and a geometric pattern image and where transmittance of at least one of the person image and the geometric pattern image changes with the lapse of time, on the display part； and an evaluating part which calculates the evaluation value of the subject on the basis of the view point detected by the view point detecting part, when the diagnostic image is displayed.
