1. A device for enhancement of visual perception in a viewer with binocular vision of a physical scene comprising: one or more enhancers positioned to the front of at least one eye of the viewer, further comprising: (a) at least one obstructor positioned in the visual field of view of the dominant eye of the viewer that obstructs a segment of said visual field that is at least partially in the visual field of view of the non-dominant eye of the viewer; and/or (b) at least one image element positioned in the visual field of view of the non-dominant eye of the viewer that is not within the visual field of view of the dominant eye of the viewer; so that the viewer's visual system gives greater attention to the retinal image of the viewer's non-dominant eye than when viewed without the device, whereby the viewer's perception of depth and/or perception of clarity in the physical scene is intensified.