If the vision system and the eyes work in a smooth, efficient, and "open" manner, it will greatly enhance the ability to use the "vertical" vision skills necessary to create personal imagery. Vertical vision skills relate to the ability to reach deeply into the mind to explore one’s subjective reality, rising up to a new level of "seeing." This can result in the transformational images that are capable of healing body, mind, and spirit. This is the essence of mind/body medicine, whereby the inner vision can change one’s physical reality. Healing visualizations have been proven to help numerous diseases and conditions, including pain, depression, digestive problems, and even cancer, multiple sclerosis, and heart disease. Conversely, it is very likely that negative imagery has a deleterious effect on optimal health and performance.