Visual perception function evaluation system

A visual perception function evaluation system for three-dimensionally identifying a neglect region and a perception region and evaluating a neglect symptom of a subject having impaired visuospatial ability, the neglect region being a region in which the subject cannot perceive an object in a visual space, the perception region being a region in which the subject can perceive the object, the visual perception function evaluation system comprising:

• a display device configured to display a three-dimensional test image including a predetermined object so that the subject can have a stereoscopic view;
• a processing device connected to the display device and configured to perform predetermined processing;
• and
• an input device through which a reply related to whether the object can be perceived by the subject is input to the processing device, wherein
• the processing device includes a display control means for controlling the state of display of the test image on the display device, and a neglect region specifying means for specifying the neglect region in a three-dimensional space in front of the subject based on the reply,
• the display control means causes the display device to display the object so that the three-dimensional position of a display point of the object in the stereoscopic view of the subject varies over time, and
• the neglect region specifying means determines three-dimensional position information on a boundary part between the perception region and the neglect region based on a position of the display point where it is replied that the object cannot be perceived and an adjacent position of the display point where it is replied that the object can be perceived.