Bernell Vergence Facility Prism Test

Brand: Bernell


Bernell Vergence Facility Prism Test - Available through INNOVA, Canada's trusted source for ophthalmic equipment and supplies.

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Vergence Facility Prism

A good binocular screening device. Performed at a distance of 40 cm with a target of 20/30. Most normal patients can cycle between these prims 15/minute. Those with difficulty should be more thoroughly tested.

12D Base-Out and 3D Base-In.

Prism is 1.5 inches square.