A study says as many as one of every 20 students have a common eye problem that isn't being caught by standard vision screenings administered by schools and pediatricians.
Eye doctors call it "convergence insufficiency," or CI. That's when eyes don't turn together properly to read, causing eye muscles to work harder to focus up-close.
When symptoms such as eye strain, headaches, double vision or reading problems trigger the right diagnosis, doctors prescribe any of a hodgepodge of exercises designed to strengthen eye coordination.
Now, a major government study finally offers evidence for the best approach: Eye training performed in a doctor's office for 12 weeks.
Diagnosis requires seeing an ophthalmologist or optometrist trained to treat children who can measure convergence with some simple tests.
(Copyright 2008 by The Associated Press. All Rights Reserved.)
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