Vivid Visions Optometry, Inc on Instagram: "Top image: normal binocular vision. As you switch between eyes, the ball stays in the same central spatial location. What changes is your perspective, not the position of the object. Bottom image: binocular vision dysfunction. As you switch between eyes, the target appears to jump side to side AND up and down (it can be one or the other or both). The focus does not stay centered. This example is exaggerated on purpose so the difference is obvious. In r