Patent ID: 9681801
Date: 2017-06-20
CPC Classifications: A61B

Claim:
1. A device comprising: a housing having a top, bottom and at least one lateral surface; at least three real depth perception test sets coupled to said at least one lateral surface such that the planes defined by the vertical and horizontal axes of said test sets intersect to define the side surfaces of a right prism with a substantially convex regular polygonal base such that the positions of said test sets are substantially rotationally symmetrical with one another relative to a central axis, and wherein each said test set lacks rotational symmetry around a horizontal plane bisecting said test set; at least three windows in said at least one lateral surface which are aligned with said test sets so as to permit viewing of said test sets; a diffuser having planar faces rotationally symmetrical with one another relative to said central axis which are substantially aligned with and substantially parallel to said test sets, wherein said planar faces of the diffuser define an interior space within the housing which is interior to the test sets in relation to the central axis; a first actuatable light source capable of illuminating said interior space; and a first elongated handle attached to said top or bottom surface of the housing, wherein the longitudinal axis of said first elongated handle is substantially aligned with said central axis such that rotation of said first elongated handle permits said test sets to be individually rotated into the field of vision of a stationary test subject.