Definify.com
Webster 1913 Edition
Optometer
Op-tom′e-ter
,Noun.
[
Opt
ic + -meter
.] (Physiol.)
An instrument for measuring the distance of distinct vision, mainly for the selection of eveglasses.
Definition 2024
optometer
optometer
English
Noun
optometer (plural optometers)
- An instrument for measuring the focus of the lens of the eye.