orthoscope

from The Century Dictionary.

• noun An instrument for holding water around the eye, so that the refraction of the cornea is eliminated and the iris can be examined.
• noun In craniometry, an instrument for drawing projections of skulls.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Physiol.) An instrument designed to show the condition of the superficial portions of the eye.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun An instrument for examining the interior of an eye.
• noun An instrument for drawing projections of a skull.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun an ophthalmoscope with a layer of water to neutralize the refraction of the cornea