Abstract: A device that simulates motion used for training and testing accommodation, vergence, and dynamic visual acuity is provided. The device includes an apparatus having plurality of light sources that can be adjusted in color and luminance disposed on a flexible substrate that can be adjusted to adjust the path and signal to simulate motion of an object. The device can include a controller that includes a processor to provide pre-determined, customizable, or random timing, location, and sequence of the motion presentation. The user response to the simulated motion can be collected, processed, and transmitted by the controller.