Definify.com
Webster 1913 Edition
Opsiometer
Opˊsi-om′e-ter
,Noun.
[Gr. [GREEK] sight +
-meter
: cf. F. opsiomètre
.] An instrument for measuring the limits of distinct vision in different individuals, and thus determiming the proper focal length of a lens for correcting imperfect sight.
Brande & C.
Definition 2024
opsiometer
opsiometer
English
Noun
opsiometer (plural opsiometers)
- An old instrument for measuring vision and determining the focal length of a lens that can correct an individual's imperfect eyesight.
- (Can we find and add a quotation of Brande & C to this entry?)