A tendency of the visual axis of one eye to deviate upward, prevented by binocular vision. ... Origin: hyper-+ G. Phora, motion ... (05 Mar 2000) ... 
(hi´pәr-for´e-ә) a type of heterophoria in which there is permanent upward deviation of the visual axis of an eye in the absence of visual stimuli.
Type: Term Pronunciation: hī′pĕr-fō′rē-ă Definitions: 1. A tendency of the visual axis of one eye to deviate upward, prevented by binocular vision.