The Butterfly-S Stereopsis Test with Standard Shapes includes:
Butterfly-S Book
Standard Viewer (Adult)
Pediatric Viewer
Manual
Butterfly-S Stereopsis Test with Standard Shapes features:
Graded circle test from 400 seconds now down to 20 seconds
No monocular clues with NEW technology
New improved booklet
Answer key on back cover
Includes both adult and pediatric polarized viewers
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