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FRIDAY, July 20, 2018 (HealthDay News) — School-aged children with developmental dyslexia (DD) more frequently have visual function deficits than typically developing (TD) children, according to a study published online July 19 in JAMA Ophthalmology<\/i>.<\/p>\n
Aparna Raghuram, O.D., Ph.D., from Boston Children’s Hospital, and colleagues examined the frequency of visual deficits in children with DD versus a control group of TD readers in a prospective uncontrolled observational study. Participants included 29 children with DD and 33 TD children.<\/p>\n
The researchers found that accommodation deficits were more frequent in the DD than the TD group (55 versus 9 percent; difference, 46 percent; 95 percent confidence interval [CI], 25 to 67 percent; P < 0.001). For ocular motor tracking, 62 and 15 percent of children in the DD and TD groups, respectively, had scores in the impaired range (difference, 47 percent; 95 percent CI, 25 to 69 percent; P < 0.001). Vergence deficits occurred in 34 and 15 percent of children in the DD and TD groups, respectively (difference, 19 percent; 95 percent CI, \u22122.2 to 41 percent; P = 0.08). Overall, 79 and 33 percent of children in the DD and TD groups, respectively, had deficits in one or more domains of visual function (difference, 46 percent; 95 percent CI, 23 to 69 percent; P < 0.001).<\/p>\n
“These findings suggest that deficits in visual function are far more prevalent in school-aged children with DD than in TD readers, but the possible cause and clinical relevance of these deficits are uncertain,” the authors write.<\/p>\n
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