PROBLEM TO BE SOLVED: To provide an eye position measurement system accurately measuring eye positions without making an infant feel uneasy.SOLUTION: A first stimulus visual target 101 is configured to be visually recognized from only one eye of a subject, a second stimulus visual target 102 is configured to be visually recognized from only the other eye of the subject, the first target 101 and the second target 102 are displayed at different positions, and then the position of the first target 101 and the position of the second target 102 are moved closer to each other, while the first target 101 and the second target 102 are displayed alternately every predetermined time, and further when the subject recognizes that the first target 101 and the second target 102 are superposed into a single shape, parallax is calculated based on the shift between the first and second targets 101 and 102.
