The VA1010S is designed to rapidly test for amblyopia and strabismus using thru fine stereopsis (2500 to 20 seconds of arc). The Graded Circles test from 400 seconds now down to 20 seconds with no monocular clues. The new improved booklet has the answer key on the back cover and includes polarized viewers.
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
The Butterfly-S Stereopsis Test with Standard Shapes includes:
- Butterfly-S Book
- Standard Viewer (Adult)
- Pediatric Viewer
- Manual

