Esophoria is an eye condition involving inward deviation of the eye, usually due to extra-ocular muscle imbalance. It is a type of heterophoria. __TOC__ Cause Causes include: Refractive errors Divergence insufficiency Convergence excess; this can be due to nerve, muscle, congenital or mechanical anomalies.
Unlike esotropia, fusion is possible and therefore diplopia is uncommon.
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