December 27, 2019
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Study shows vision therapy does not improve reading in convergence insufficiency

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Children with a diagnosis of symptomatic convergence insufficiency saw no additional improvement in reading comprehension with office-based vergence/accommodation therapy compared with office-based placebo therapy, according to findings published in Optometry and Vision Science.

Members of the Convergence Insufficiency Treatment Trial — Attention and Reading Trial (CITT-ART) evaluated the effect of office-based vergence/accommodative therapy on reading performance in 310 children 9 to 14 years old with symptomatic convergence insufficiency.

The children were randomized to receive 16 weeks of either office-based vergence/accommodative therapy or office-based placebo therapy, and the primary outcome was change in reading comprehension on the Wechsler Individual Achievement Test, third edition (WIAT-III).

The investigators found that the adjusted mean improvement in WIAT-III reading comprehension was 3.7 (95% CI, 2.6-4.7) in the vergence/accommodative therapy group and 3.8 (95% CI, 2.4-5.2) in the placebo group. There was an adjusted mean group difference of -0.12 (95% CI, -1.89 to 1.66) that was not statistically significant, they said.

“While in-office therapy can improve visual function for children with [convergence insufficiency], this trial indicates that clinicians should not suggest that it will lead to increased reading performance,” co-author Mitchell Scheiman, OD, PhD, said in a press release. – by Earl Holland Jr.

Disclosures: The authors report no relevant financial disclosures.