Abstract: A device for improvement and training the fusion reflex and method for use thereof are proposed. The method comprises providing the device, including substantially identical right and left photo-probes, each photo-probe including a base stand, supporting a vertical rod, with an aiming unit, light-emitting photo-targets of different colors, mounted on the rod, with predetermined distances therebetween and to the aiming unit, choosing a distant object, disposing the photo-probes in front of the person's eyes, closing the left eye, pointing the aiming means at the object, imposing a photo-targets' image, immediately under the object's image, opening the left eye, viewing real and phantom right photo-target images, positioned to the left from the real one, closing the right eye, and repeating the same steps for the right eye, opening both eyes, simultaneously repeating the same steps for both eyes; and repeating the aforesaid cycle a predetermined number of times.