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- Butterfly Stereotest with LEA Symbols
1035043
The Butterfly Stereotest with LEA® Symbols screen for amblyopia and strabismus using gross thru fine stereopsis.
* Screens and evaluates random dot stereo depth perception for both gross stereopsis and fine depth perception.
* Graded circle test (800 to 40 seconds of arc)
* LEA symbols for children (400 to 100 seconds of arc)
Test includes:
* 1 pair of Standard 3-D Viewers
* Answer key on back cover
Height | 3 in |
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Width | 11 in |
Length | 8 in |
Assembly Required | No |
Choking Hazard | No |
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Sterile | No |