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STEREO BUTTERFLY
A random dot Stereo Depth perception for gross stereopsis. Figures cannot be identified without glasses to discourage guessing.
Test Package Includes:
-Random Dot Butterfly for Gross Stereopsis (2500 to 1200 seconds of arc)
-Graded Circle Test (800 to 40 Seconds of Arc)
- Animal Test for young children (400 to 100 Seconds of Arc)
- One pair of Standard 3-D Viewers
