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Product Description
Details
Stereo Butterfly Test including LEA Symbols
Tests and evaluates random dot stereo depth perception for both gross stereopsis and fine depth perception.
Includes:
• Graded circle test (800 to 40 seconds of arc)
• LEA Symbols® for children (400 to 100 seconds of arc)
• 1 pair of standard 3-D viewers
• Answer key on back cover