Brian Boxer Wachler, M.D., is an expert on human perception and the author of Perceptual Intelligence. He has pioneered treatments in vision correction and Keratoconus, published eighty-four medical articles, and delivered 276 scientific presentations. He is the first choice of many doctors for their own eye treatments. He is the medical director of the Boxer Wachler Vision Institute in Beverly Hills and a staff physician at Los Angeles's famed Cedars-Sinai Medical Center. Find him online at www.boxerWachler.com and www.perceptualintelligence.com. Printed with permission from New World Library at www.newworldlibrary.com.