Lang Stereo Test No. 2
Lang stereo test No. 2
Stereograms not requiring the use of polarised spectacles featuring a car, van & elephant with monocular star control
Product Code: A19017
- The Lang Stereotest was created to simplify stereopsis screening in children. It is based on two principles: random dots and cylindrical gratings.
- In binocular vision stereoscopic shapes are recognized.
- Lang Stereotest II measures disparities: Moon and Star are 200, car 400 and elephant 600 seconds of arc plus monocularly visible star.
- In the new Lang II test, the random dots are smaller and less dense.
- This disparity is finer, namely 200 seconds of arc for the moon and the star, 400 for the car, and 600 for the elephant when viewed at a distance of 40cm.
- Dimensions (mm):
- Voltage:
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