Stereotest LANG II-R

The 2023 released Stereotest LANG II-R is used for stereopsis screening without glasses from 6 months on. It comes with 4 objects from 200 to 600 arc seconds. In comparison to the previous version, a few details have been improved: The sharpness of the objects and the homogeneity of the dot shape is higher, in order to further reduce the monocular recognizability. The optical and printing quality are better, and there are no more monocular hints visible, when performed correctly. The II-R comes in a light but stable white covering, including a two page manual. Weight: 54g.

Features of the stereo test LANG II-R

• Random dot test card with lenticular surface, 14.5cm x 9.5cm, rounded corners


• Test distance 30-40cm


• Three stereo objects with different transverse disparity and correspondingly different spatial Emigration. Elephant 600'', car 400'' and Moon 200''


• The monocularly visible star with a disparity of 200" is intended to improve diagnostics in young children by increasing alertness and reaction. In addition, subjects without binocular vision are less disappointed.


• Quick instructions in English on the back of the test card, with schematic drawing for correct use, mirrored arrangement of the stereo objects and typical pattern of eye movements in stereo capable
  subjects (positive result)


• Test instructions in the respective national language (others at www.lang-stereotest.com)


• Handy and light case, detailed test instructions included

Main advantages of the Stereotest LANG II-R compared to commercially available stereo tests:

• Test procedures without glasses such as LANG-STEREOTEST® I and II as well as LANG-STEREOPAD®


• Research-based screening tool


• High sensitivity of 99% and specificity of 87% (identification of a microstrabismus)


• High sensitivity and specificity for stereopsis: sensitivity 100%, specificity 93-100%


• Very easy to use with clear brief instructions on the test card. Unlike most other stereo tests, it can be used from 6 months onwards!