hyperphoria


Also found in: Acronyms.

hyperphoria

 [hi″per-fo´re-ah]
heterophoria in which there is permanent upward deviation of the visual axis of an eye in the absence of visual stimuli.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

hy·per·pho·ri·a

(hī'pĕr-fō'rē-ă),
A tendency of the visual axis of one eye to deviate upward, prevented by binocular vision.
[hyper- + G. phora, motion]
Farlex Partner Medical Dictionary © Farlex 2012

hy·per·pho·ri·a

(hī'pĕr-fōr'ē-ă)
A tendency of the visual axis of one eye to deviate upward, prevented by binocular vision.
[hyper- + G. phora, motion]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

hyperphoria

The tendency for the line of sight of one eye to deviate upward relative to that of the other eye, in the absence of an adequate stimulus to fusion. If the deviation tends to be downward relative to the other eye or if the other eye in hyperphoria is used as a reference, the condition is called hypophoria. See kataphoria.
left hyperphoria (L/R) Hyperphoria in which the line of sight of the left eye deviates upward relative to the other eye.
paretic hyperphoria Hyperphoria due to a paresis of one or several of the extraocular muscles.
right hyperphoria (R/L) Hyperphoria in which the line of sight of the right eye deviates upward relative to the other eye.
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann
References in periodicals archive ?
Five patients had vertical hyperphoria of small to moderate amounts (0-2 PD).
AC/A = accommodative convergence-to-accommodation, eso = esophoria, exo = exophoria, Hyper = hyperphoria, NA = not applicable, NRA = negative relative accommodation, Ortho = orthophoria, PD = prism diopter, PRA = positive relative accommodation, SD = standard deviation, SEM = standard error of the mean.
In DVD, each eye deviates upwards when it is covered, giving the appearance of alternating hyperphoria. Often, the eye starts to deviate before the occluder actually covers the eye.