An eye condition where one or both eyes turn inward toward the nose, causing the eyes to appear crossed.
From Greek 'eso-' (inward) + '-tropia' (turning). The suffix '-tropia' is standard in ophthalmology for describing eye-turning conditions, as seen in 'exotropia' (outward turning).
Esotropia is often called 'crossed eyes,' and it's more common than you'd think—about 1% of people have it, though many cases are caught and treated in childhood before it affects vision development in the brain.
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