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Lang II Stereopsis Test
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Description
Lang II Stereopsis Test
A simple test designed for stereopsis screening in children based on two principles, random dots and cylinder gratings.
- In binocular vision stereoscopic shapes are recognized.
- The images of the two eyes are separated by a system of fine parallel cylindrical strips. Beneath each cylinder there are two fine strips of pictures, one seen by the right, the other seen by the left eye. These two methods were combined for the first time in the Lang-Stereotest.
ADVANTAGES
- There are no glasses required which often distract a child.
- The patients eye movements are easily observed.
- Pocket sized.
Lang II: Disparity = Moon 200", Car 400", Elephant 600", Star monocular visible.
(The monocularly visible star helps attract and maintain the interest of small children. It also gives the patient without binocular vision the satisfaction of having seen something at all.)
A simple test designed for stereopsis screening in children based on two principles, random dots and cylinder gratings.
- In binocular vision stereoscopic shapes are recognized.
- The images of the two eyes are separated by a system of fine parallel cylindrical strips. Beneath each cylinder there are two fine strips of pictures, one seen by the right, the other seen by the left eye. These two methods were combined for the first time in the Lang-Stereotest.
ADVANTAGES
- There are no glasses required which often distract a child.
- The patients eye movements are easily observed.
- Pocket sized.
Lang II: Disparity = Moon 200", Car 400", Elephant 600", Star monocular visible.
(The monocularly visible star helps attract and maintain the interest of small children. It also gives the patient without binocular vision the satisfaction of having seen something at all.)
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