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Product Description
Details
Stereo Optical® Stereo Butterfly
Offers no monocular visual clues, discourages guessing and allows effective screening of gross stereopsis. Latex-free.
Folder includes: Random Dot Butterfly for gross stereopsis (2500 and 1200 seconds of arc). Graded circle test (800 to 40 seconds of arc). Animal test for young children (400 to 100 seconds of arc). Standard stereo glasses.
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