Here you will find one or more explanations in English for the word Opsiometer.
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Opsiometer
Opsiometer Op`si*om"e*ter, n. [Gr. ? sight + -meter: cf. F.
opsiom[`e]tre.]
An instrument for measuring the limits of distincts vision in
different individuals, and thus determiming the proper focal
length of a lens for correcting imperfect sight. --Brande &
C.
Meaning of Opsiometer from wikipedia
