Posner Gonio Prism

Ideal for use with children or patients with a small palpebral fissure. The instrument consists of a highly polished truncated silver surfaced pyramid with a plane anteroir viewing surface over four mirrors. An aluminum handle set at 35 degrees is bonded to one corner of the lens. The lens is used in the diamond position (45 degrees) resulting in fewer adjustments of lowering and elevating the slit beam with either hand.

Fits in coat pocket.

NO NEED FOR GONIOSOL!!

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