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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.
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3. Do not expose the test card to heat or sunlight, which may cause deformation. If it has been deformed convexly, not all 3D objects may be seen simultaneously. LANG-STEREOTEST I Disparities: Car: 550” Star: 600”...
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