Successful accommodative esotropia may create high anomalous binocular vision

A high accommodative convergence-to-accommodation relationship in children may lead to a high likelihood of anomalous binocular vision and may pose a significant risk for abnormal fusional vergence, according to a study.

Sherry Fawcett, PhD, and Eileen Birch, PhD, followed 69 children with accomodative esotropia to determine clinical factors associated with abnormal binocular vision. Children having a duration of constant eye misalignment more than 4 months before being successfully treated were 4.6 times more likely to have abnormal steropsis than children with a duration of constant esotropia diagnosed between 0 and 3 months. The study also found that the children in the first group were 33 times more likely to have no stereopsis; 37 times more likely to have an absence of fusional vergence; 31 times more likely to have an absence of sensory foveal fusion; and 17 times more likely to have an asymmetric motion visual-evoked potential.

The study is published in the Journal of AAPOS.