[huh-rop-ter, haw-]
noun Ophthalmology.
a projection of the points in the visual field corresponding to the aggregate of points registering on the two retinas.

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

horopteric [hawr-op-ter-ik] , adjective
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World English Dictionary
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
[C18: from Greek horos boundary + optēr, from ops eye]

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

horopter ho·rop·ter (hô-rŏp'tər)
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
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