Results from a clinical trial funded by the National Eye Institute (NEI) show that while vision therapy can successfully treat convergence insufficiency (CI) in children, it fails to improve their reading test scores. Investigators from the Convergence Insufficiency Treatment Trial – Attention and Reading Trial (CITT-ART) published the results online today in Optometry and Vision Science.
While all children showed improved reading comprehension on the WIAT after 16 weeks, there was statistically no difference between average reading improvement for the CI treatment group (3.68 points) and placebo group (3.80 points). Nor was in-office vision therapy better than the placebo therapy on other standardized reading tests. Meanwhile, 75-80% of children in the vision therapy group had shown significant improvement and fell into the normal range for clinical signs, compared with approximately 30% in the placebo group.