[ an-uh-sahy-koh-nee-uh ]
/ ˌæn ə saɪˈkoʊ ni ə /

noun Ophthalmology.

a defect of vision in which the images at the retinas are unequal in size.



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Origin of aniseikonia

From New Latin, dating back to 1930–35; see origin at aniso-, eikon, -ia

OTHER WORDS FROM aniseikonia

an·is·ei·kon·ic [an-uh-sahy-kon-ik] /ˌæn ə saɪˈkɒn ɪk/, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for aniseikonia

/ (ˌænaɪsaɪˈkəʊnɪə) /


a condition caused by a defect in the lens of the eye in which the images produced in the two eyes differ in size or shape

Derived forms of aniseikonia

aniseikonic, adjective

Word Origin for aniseikonia

C20: New Latin, from aniso- + Greek eikon image
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for aniseikonia

[ ăn-ī′sī-kōnē-ə ]


A condition in which the shape and size of the ocular image differ in each eye.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.