Vision therapy for a concussion often includes the wearing of eyeglasses with prisms, which compensate for any changes to the visual system caused by the concussion. Prisms address spatial challenges — such as posture, depth perception, coordination, and balance — by shifting the perceived position of objects and adjusting part of the person’s visual field. You should begin to notice improvement while wearing prism eyeglasses during therapeutic exercises like walking in a corridor, taking heel-to-toe steps, and reading. If the concussion’s visual effects are more severe, Dr. Colette Whiting and Dr. Sandra Gillis-Kennedy will prescribe prism eyeglasses for your daily use.