- (formerly) an instrument for examining the internal structures of the eye through a layer of water that neutralizes the refraction of the cornea.
Origin of orthoscope
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- med obsolete a 19th-century instrument for viewing the fundus of the eye through a layer of water, which eliminates distortion caused by the cornea
- An instrument used to examine the eye that eliminates corneal refraction by means of a layer of water.