“…Hemianopia occurs in 30% 1 to 50% 2 of strokes, 9% 3 to 12% 4 of traumatic brain injuries (TBIs), affects walking, 5–7 driving, 8, 9 independence, 7 and quality of life, 7, 10 and is unlikely to improve if the hemifield loss is complete and time since vision loss is > 1 month. 4, 11, 12 The vision loss is fixed to the position of the eye so if the eyes are scanned towards the blind side, objects in that field can be visually detected.…”