Exophoria

Exophoria

Infobox_Disease
Name = Exophoria


Caption =
DiseasesDB =
ICD10 = ICD10|H|50|5|h|49
ICD9 = ICD9|378.42
ICDO =
OMIM =
MedlinePlus =
eMedicineSubj =
eMedicineTopic =
MeshID =

Exophoria is a form of heterophoria in which there is a tendency of the eyes to deviate outward.

Prevalence

Exophoria is particularly common in infancy and childhood, and increases with age.

Cause

Exophoria can be caused by several factors, which include:

*Refractive errors - distance and near deviation approximately equal.
*Divergence excess - exodeviation is more than 15 dioptres greater for distance than near deviation.
*Convergence insufficiency - near exodeviation greater than distance deviation.

These can be due to nerve, muscle, or congenital problems, or due to mechanical anomalies. Unlike exotropia, fusion is possible in this condition, causing diplopia to be uncommon.


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Look at other dictionaries:

  • exophoria — noun A form of heterophoria in which there is a tendency of the eyes to deviate outward …   Wiktionary

  • exophoria — Tendency of the eyes to deviate outward when fusion is suspended. SYN: exodeviation (1). [exo + G. phora, a carrying] * * * ex·o·pho·ria .ek sə fōr ē ə n latent strabismus in which the visual axes tend outward toward the temple compare… …   Medical dictionary

  • exophoria — ex·o·pho·ria …   English syllables

  • exophoria — n. a tendency to squint in which the eye, when covered, tends to turn outwards. The eye always straightens on removal of the cover. See also: heterophoria …   The new mediacal dictionary

  • exophoria — …   Useful english dictionary

  • Экзофория (Exophoria) — тенденция глаза к отклонению кнаружи при отсутствии внешних зрительных раздражителей. См. также Гетерофория. Источник: Медицинский словарь …   Медицинские термины

  • экзофория — (exophoria; экзо + греч. phoros несущий) гетерофория с тенденцией к отклонению глаза кнаружи …   Большой медицинский словарь

  • Экзофори́я — (exophoria; Экзо + греч. phoros несущий) гетерофория с тенденцией к отклонению глаза кнаружи …   Медицинская энциклопедия

  • ЭКЗОФОРИЯ — (exophoria) тенденция глаза к отклонению кнаружи при отсутствии внешних зрительных раздражителей. См. также Гетерофория …   Толковый словарь по медицине

  • Convergence insufficiency — Convergence Insufficency Classification and external resources ICD 10 H51.1 ICD 9 378.83 …   Wikipedia

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