cliparts/5/8/b/0/clipart-optical-illusion-1-58b0.svg image/svg+xml Open Clip Art Library Optical Illusion 1 2013-01-17T08:44:32 Move you eyes and you will see some movements. \n \nI don't think it's copyrighted. http://openclipart.org/detail/174309/optical-illusion-1-by-gustavorezende-174309 gustavorezende clip art clipart illusion movement optical illusion