| abstract |
In conventional methods for detecting a point of gaze, a diagnosis sometimes cannot be appropriately assisted depending on a diagnostic image to be presented to a subject, and therefore a higher-accuracy detection method is required. In order to improve the accuracy of a diagnosis, a control device displays a diagnostic image obtained by combining a natural image and a pattern image on a display unit, and is provided with an output control unit which displays a first diagnosis image on the display unit, and after displaying the first diagnostic image, displays, on the display unit, a second diagnostic image in which the portion of the natural image and the pattern image are more similar than in the first diagnostic image. |