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The Vergence Facility Prism is used to test for binocular vision disorders and symptoms. Size: 3 Base In, 12 Base Out. Proudly made in the U.S.A.
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$16.50
Vergence Facility testing has been shown to be one of the most important methods of detecting patients with binocular vision disorders and symptoms. Diagnosis of non-strabismus binocular vision abnormalities can be improved through the use of vergence facility testing at near.