If you don"t move and can look at dot your mind makes negative image to compensate just like a camera and will block it out. Only look a the dot. First circle will waver or seam to disappear .Then it will ! Don't do this a lot it could give you a Brain Freeze !!! Try for 30 seconds and if the circle doesn't begin to waver you can stop the test. It is easier to do by covering one eye with your hand and only seeing the dot with the other open eye.
