Visual Function Deficits Up in Developmental Dyslexia
[Source: Medical X-Press]
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.
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.
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
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