| optometer | <physiology> An instrument for measuring the distance of distinct vision, mainly for the selection of eveglasses. Origin: Optic. Source: Websters Dictionary (01 Mar 1998) |
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| objective optometer | <optics> A contrivance for exhibiting and measuring the refraction of light. Origin: Refraction. Source: Websters Dictionary (01 Mar 1998) |
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| optometer |
an instrument formerly used to measure ocular refraction; called also opsiometer, optimeter, and refractometer.
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