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Study examines long-term outcomes of acquired nonaccommodative esotropia

Ophthalmology. 2011;118(6):1170-1174.

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Acquired nonaccommodative esotropia occurred in one of 287 live births and more frequently in boys, according to a population-based study in Olmsted County, Minn.

During a 30-year period, 174 children were diagnosed with acquired nonaccommodative esotropia; 61% of patients were boys. Amblyopia was diagnosed in 41% of the patients initially, with 25 ΔD being the median horizontal angle of deviation at near and 20 ΔD at distance.

Of these 174 children, 127 underwent strabismus surgery (73.3%) at a mean age of 10.9 years after diagnosis. Twenty-nine (22.8%) required a second surgery, and five (3.9%) underwent a third; three-fourths of the surgeries resulted in a horizontal alignment within 10 ΔD and some stereopsis.

After 4 years of age, children with a diagnosis of acquired nonaccommodative esotropia with no amblyopia had the best outcomes in motor and sensory functions.

The study suggested that patients with acquired nonaccommodative esotropia have a more successful long-term outcome than patients with other types of strabismus.