Bernell RIsley Rotarty Prism (Up to 30D)

Bernell

$540.73
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SKU:
TE1BEARPHH30
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Transactional
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This convenient testing tool utilizes a rotating knob to conveniently vary prism demand up to 30PD in each direction (eso/exo).

A prism before each eye can increase the demand of 60PD.

The prism is approximately 1" in diameter.