Shift the apparent apparent

摘要

PROBLEM TO BE SOLVED: To provide a visual field test system performing a visual test in a short time.SOLUTION: A fixed visual target 110, first stimulus visual target 101, and a second stimulus visual target 102 are displayed, and then a third stimulus visual target 103 is displayed to cover the first target 101 and the second target 102, after a predetermined time. When the second target 102 is out of the visual field of a subject, the subject has an optical illusion in which the third target 103 appears to extend from the first target 101 toward the second target 102. The subject inputs the optical illusion in which the third target 103 appears to extend from the first target 101 toward the second target 102, and thus, the visual test shows that the part of the second target 102 is out of the visual field.