The Lang Stereotest was created to simplify stereopsis screening in children.
Natural Stereotests
| Stock Code | Description | Price | ||
|---|---|---|---|---|
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7307020 |
Lang No. 1 stereotest in wallet (car, cat, and star shapes) The Lang Stereotest was created to simplify stereopsis screening in children. It is based on two principles: random dots and cylindrical gratings. Lang Stereotest I measures disparities: star 600, cat 400 and car 550 seconds of arc. In binocular vision stereoscopic shapes are recognised. No glasses are required meaning the patients eye movements are easily observed. Pocket sized. |
£80.00 | Place Enquiry |
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7307025 |
Lang No. 2 stereotest in wallet (elephant, van and moon with monocular star control) 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. |
£80.00 | Place Enquiry |
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7307030 | Lang Nos. 1 and 2, stereotests in wallet | £158.00 | Place Enquiry |
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7308001 |
Frisby stereotest A simple, durable, quick test. Three square transparent plates 6mm, 3mm, 1.5mm) have four similar patterns printed, three on one surface and one on the other, hence one appears in relief as closer or nearer. The patient indicates which square stands out in space from the others. The box is used for storing the plates and also has a fold-out flap for providing a clear background against which the plates are presented. |
£170.00 | Place Enquiry |
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7308005 |
Frisby screening stereotest The Frisby Stereotest Screening is particularly useful where language barriers can create difficulties in communication, it facilitates easy presentations to children from about 6 months of age.. The test, A single 6mm plate without studs, is shown to the subject by opening the presentation box, and a spontaneous pointing or looking response can be sufficient to establish that stereopsis is present |
£83.00 | Place Enquiry |
