empiric horopter

em·pir·ic hor·op·ter

(em-pir'ik hōr-op'tĕr)
An experimentally determined ellipse passing through the optic centers of two eyes by which points adjacent to the point of fixation, both lying on the ellipse, are perceived to be stimulating corresponding retinal points.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
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