heterophoria


heterophoria
A tendency for deviation of the eyes from parallelism, prevented by binocular vision. [hetero- + G. phora, movement]

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het·ero·pho·ria .het-ə-rō-'fōr-ē-ə, -'fȯr-ē-ə n latent strabismus in which one eye tends to deviate either medially or laterally compare EXOPHORIA
het·ero·phor·ic -'fȯr-ik, -'fär-ik adj

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n.
a tendency to squint. Under normal circumstances both the eyes work together and look at the same point simultaneously, but if one eye is covered it will move out of alignment with the object the other eye is still viewing. When the cover is removed the eye immediately returns to its normal position. Most people have some small degree of the type of heterophoria known as exophoria, in which the covered eye turns outwards, away from the nose (compare esophoria). Heterophoria often produces eyestrain because of the unconscious effort required to keep the two eyes aligned. See also strabismus.

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het·ero·pho·ria (het″ər-o-forґe-ə) [hetero- + Gr. phora movement, range] failure of the visual axes to remain parallel after the visual fusional stimuli have been eliminated. Types are named using the suffix phoria with a prefix indicating the direction of deviation. See cyclophoria, esophoria, exophoria, hyperphoria, and hypophoria. Called also latent deviation.

Medical dictionary. 2011.

Look at other dictionaries:

  • Heterophoria — Infobox Disease Name = PAGENAME Caption = DiseasesDB = ICD10 = ICD10|H|50|5|h|49 ICD9 = ICD9|378.40 ICDO = OMIM = MedlinePlus = eMedicineSubj = eMedicineTopic = MeshID = Heterophoria is a type of eye condition where the motion of the eyes are not …   Wikipedia

  • heterophoria — n. a tendency to squint. Under normal circumstances both the eyes work together and look at the same point simultaneously, but if one eye is covered it will move out of alignment with the object the other eye is still viewing. When the cover is… …   The new mediacal dictionary

  • heterophoria — heterophoric /het euhr euh fawr ik, for /, adj. /het euhr euh fawr ee euh, fohr /, n. Ophthalm. a latent strabismus of one or both eyes. [1885 90; HETERO + Gk phoria a carrying, equiv. to phor(os) PHOROUS + ia IA] * * * …   Universalium

  • heterophoria — noun Latent strabismus, which occurs only during dissociation of the left eye and right eye, whereby fusion of the eyes is absent …   Wiktionary

  • heterophoria — n. tendency of one eye to deviate in one direction or another (Ophthalmology) …   English contemporary dictionary

  • heterophoria — het·er·o·pho·ria …   English syllables

  • heterophoria —   n. squint due to weak muscle.    ♦ heterophoric, a …   Dictionary of difficult words

  • heterophoria — …   Useful english dictionary

  • Гетерофория (Heterophoria) — тенденция к отклонению глазных яблок от параллельных осей. При нормальных обстоятельствах оба глаза работают вместе, одновременно смотря в одну и ту же точку, однако если прикрыть один глаз рукой, то он отойдет от первоначальной параллельной оси …   Медицинские термины

  • latent deviation — heterophoria …   Medical dictionary


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