Exophoria
In today's article we will talk about Exophoria, a topic that has captured the attention of many in recent years. Exophoria is a phenomenon that has generated great interest in global society, whether due to its impact on people's lives, its relevance in the professional field or its influence on popular culture. Throughout this article, we will analyze in detail the most relevant aspects of Exophoria, from its origins to its current state, exploring its implications in different contexts and offering a comprehensive view of its meaning and scope. In addition, we will examine the opinions of experts on the subject and present some of our own reflections on this phenomenon, with the aim of providing a complete and enriching perspective for the reader.
| Exophoria | |
|---|---|
| Specialty | Ophthalmology |
Exophoria is a form of heterophoria in which there is a tendency of the eyes to deviate outward.[1] During examination, when the eyes are dissociated, the visual axes will appear to diverge away from one another.[2]
The axis deviation in exophoria is usually mild compared with that of exotropia.
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.
Diagnosis
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Prevalence
Exophoria is particularly common in infancy and childhood, and increases with age.[3][clarification needed]
References
- ^ Allen, Edmund Turney (1899). The science of higher prisms. Harvard University: G. K. Hazlitt 6 Co., printer. p. 39. ISBN 978-1-02-235217-9.
- ^ Grosvenor, Theodore (2007). Primary Care Optometry 5th Ed. Butterworth-Heinemann. p. 224. ISBN 978-0-7506-7575-8.
{{cite book}}: CS1 maint: location missing publisher (link) - ^ Freier BE, Pickwell LD (1983). "Physiological exophoria". Ophthalmic and Physiological Optics. 3 (3): 267–272. doi:10.1111/j.1475-1313.1983.tb00613.x. PMID 6646761. S2CID 11180397.