We have developed an application based on binocular vision for amblyopia treatment. It is founded on stereo vision of objects with different contrast. Fellow eye occlusion does not allow a binocular vision but only a monocular one. This approach causes brain skills loss like the perception of depth. Our system increases visual acuity for amblyopic patients using binocular vision. Binocular vision shows an object to each eye with different contrast. In fact, if we apply a right contrast ratio between amblyopic eye and lazy eye, then amblyopic patient is able to perceive both.