Abstract: Visual effects presented in at least an ultra-far peripheral horizontal static field of the eyes of a user improve or enhance brain function, homeostasis and performance. The visual effects are non-contextual with respect to content appearing in a central field of vision, and do not constitute a cursor, a user input field or other user interface element. The ultra-far peripheral horizontal static field extends rearwardly from a fovea centralis of the eye in a straight ahead static gaze direction to 100 degrees or more rearwardly from the fovea centralis. Such can be used to treat or improve: traumatic brain injury; acuity, focus, visual convergence, visual sustainability, visual processing, visual field, retinal health, brain field health, visual discrimination, visual spatial memory, ocular motility, pursuits and saccades, hold fixation, convergence/divergence, eye alignment, depth perception, Phorias, occipital cortex, blink rate, pain, migraine headaches, and/or balance of the user or human subject.