Abstract: A vision improvement device using glasses in which one or more lens is a rapid shutter, such as a liquid crystal shutter. The subject wears the glasses and the shutter is rapidly operated such that vision from the strong eye is subdued or blocked off long enough to allow the weak eye information to be processed by the brain to promote improved depth perception. One eye is permitted to see while the other eye is occluded. By control of the shutter the weaker eye can be exposed for longer than the stronger eye to compensate for the brain's ability to ignore the weak eye information. In an alternative embodiment, individual eyes may be manipulated to favor one over the other to achieve the benefit of improving depth perception. As such, control over vision results in an improved balance of per-eye information, increasing stereoscopic vision.