The Collaborative International Dictionary
Ophthalmometer
Ophthalmometer \Oph`thal*mom"e*ter\, n. [Gr. 'ofqalmo`s eye + -meter.] (Physiol.) An instrument devised by Helmholtz for measuring the size of a reflected image on the convex surface of the cornea and lens of the eye, by which their curvature can be ascertained.
Wiktionary
ophthalmometer
n. (context physiology English) An instrument for measuring the size of a reflected image on the convex surface of the cornea and lens of the eye, by which their curvature can be ascertained.
Usage examples of "ophthalmometer".
Then he lowered the lights in the examination room to study his eyes with an ophthalmometer and an ophthalmoscope.