Ophthalmometer
Pronunciation : Oph`thal*mom"e*ter
Part of Speech : n.
Etymology : [Gr. -meter.] (Physiol.)
Definition : Defn: 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.
Source : Webster's Unabridged Dictionary, 1913