A handheld device is disclosed for assisting in stimulating vision improvement in individuals with visual field loss caused by brain trauma or cortical visual impairment. The device comprises a number of lights arranged in a pattern, which blink sequentially to provide the visual effect of a single light moving across the pattern. The device may be set to create the visual motion effect, and then placed at the edge of the field of vision loss so that the individuals brain will sense movement within the visual field and track that movement into the blind spot. The device includes controls to adjust the brightness and frequency of the blinking lights.