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Colour Vision and Stereo Tests | Lang Stereo Test No. 2
Lang stereo test No. 2
Product code | A19017
Lang Stereo Test No. 2
- 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.
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Pattisson House
Addison Road, Chesham
Buckinghamshire HP5 2BD
UK
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carleton@carletonltd.comSales:
01494 775 811
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