ophthalmometer


From The Collaborative International Dictionary of English v.0.48:

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.
   [1913 Webster]
Feedback Form