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The LANG-STEREOTEST is an easy-to-use screening-test designed for early detection of problems with stereoscopic vision of children. Two versions of the test plates are available, which differ only according to the 3D objects to be recognized. The LANG-STEREOTEST I displays a star, a cat and a car, while the LANG-STEREOTEST II displays a moon, a truck and an elephant, each of them appearing on a different level. In addition, the LANG-STEREOTEST II contains a star that can be seen with only one eye.