The Lang-Stereotest® II-R is a revised version of the Lang-Stereotest® II. This revised version has improved optical and print quality over the earlier version and has no monocular clues when used correctly. Also new is a brief instruction in English on the back of the test card, with schematic illustration for correct use, mirror-image arrangement of stereo objects and typical pattern of eye movements in stereopositive subjects.
 
The Lang-Stereotest® II-R is a supplement to the proven Lang-Stereotest® I-R (star, cat, car) and is also used to test binocular vision according to the same principle. In addition to three figures that are only visible binocularly (crescent moon, car and elephant), there is also a contoured star that can be seen with one eye. Many users had requested another stereoscopic examination card as an alternative to the Lang-Stereotest® I-R. In the Lang-Stereotest® II-R, the random dots are smaller and less dense. The disparities are chosen to be slightly finer, 200 arc seconds for the moon, 400" for the car and 600" for the elephant, valid for an observing distance of 40 cm (10-15 inches). The monocularly visible star with a disparity of 200" is said to improve diagnostics in young children by increasing attention and reaction. In addition, subjects without binocular vision remain less disappointed.