Search Result for "orthoscope": 
Wordnet 3.0

NOUN (1)

1. an ophthalmoscope with a layer of water to neutralize the refraction of the cornea; 



The Collaborative International Dictionary of English v.0.48:

Orthoscope \Or"tho*scope\, n. [Ortho- + -scope.] (Physiol.)
   An instrument designed to show the condition of the
   superficial portions of the eye.
   [1913 Webster]


WordNet (r) 3.0 (2006):

orthoscope
    n 1: an ophthalmoscope with a layer of water to neutralize the
         refraction of the cornea