Ophthalmometer

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  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]