webmd.com webmd.com How the Human Eye Sees - WebMD how our brains process imagery http://www.webmd.com/eye-health/amazing-human-eye webmd.com webmd.com How the Human Eye Sees - WebMD Web MD: The Amazing Human Eye http://www.webmd.com/eye-health/amazing-human-eye How We See: The First Steps of Human Vision WebMD: Your Guide to How the Eye Sees webmd.com