Exophoria

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

During examination, when the eyes are dissociated, the visual axes will appear to diverge away from one another.

Theodore Grosvenor (2026). 9780750675758 ISBN 9780750675758

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 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.

---

Prevalence Exophoria is common in Infant and childhood, and increases with age.

---

External links

Post Comment