[ huh-rop-ter, haw- ]
/ həˈrɒp tər, hɔ- /

noun Ophthalmology.

a projection of the points in the visual field corresponding to the aggregate of points registering on the two retinas.

Origin of horopter

1695–1705; < Greek hór(os) boundary + optḗr one that looks

Related forms

hor·op·ter·ic [hawr-op-ter-ik] /ˌhɔr ɒpˈtɛr ɪk/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for horopter


/ (hɒˈrɒptə) /


optics the locus of all points in space that stimulate points on each eye that yield the same visual direction as each other

Word Origin for horopter

C18: from Greek horos boundary + optēr, from ops eye
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

Medicine definitions for horopter


[ hô-rŏptər ]


The sum of all points in space whose images form at corresponding points on the plane of the retina.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.