Evidence that convergence rather than accommodation controls intermittent distance exotropia

What is it about?

We studied what visual cues patients used to help control their eyes in intermittent divergent strabismus (squint). It had previously been thought that some children controlled by over-focusing; using accommodation to control their strabismus. We found that they behaved similarly to typical children and used binocular disparity cues to converge their eyes. Because children with squints needed to do more convergence, this sometimes led to the over-focus that had been thought to be the primary drive to control.

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Why is it important?

This helps clarify the mechanism by which children control a common eye misalignment. It may help clinicians understand the condition better and plan their treatments