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there is the one that look like an empty glass frame and it is called a "trial frame" and there is that large thing that is put in front of your eyes and the doc keeps clicking on it and asking 1 or 2, 1 or 2 which is called a "phoropter".

2006-11-02 09:02:39 · answer #1 · answered by devy 2 · 0 0

A PHOROPTER.

2006-11-02 17:01:21 · answer #2 · answered by Dr. Albert, DDS, (USA) 7 · 0 0

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