Attention deficit hyperactivity disorder is one of the most frequently encountered neurodevelopmental disorders of childhood, and a new study from researchers at the University of Alabama at Birmingham recently published in Optometry and Vision Science shows a relationship between ADHD and vision impairments in children.
Results from a large survey of 75,000 children suggest an increased risk of ADHD among children with vision problems that are not correctable with glasses or contacts relative to other children with 15.6 percent of children with vision impairment also having an ADHD diagnosis, compared with 8.3 percent of children with normal vision. These types of vision problems could range from color vision deficiency to a lazy eye but would also include children with vision impairment. The study included children ages 4 to 17 enrolled in the National Survey of Children’s Health.
This finding suggests that children with vision impairment should be monitored for signs and symptoms of ADHD so that if present, this dual impairment of vision and attention can best be addressed.
Director of the UAB Center for Low Vision Rehabilitation, Dawn DeCarlo, O.D., was the lead investigator on the study. She says just because vision problems that are not correctable with glasses or contacts are associated with ADHD that does not mean that one causes the other.
The national study was produced in response to patients of DeCarlo exhibiting vision impairment and ADHD. A previous paper reported an increased prevalence of ADHD among the children in her vision rehabilitation clinic.
“Because we do not know if the relationship is causal, we have no recommendations for prevention,” DeCarlo said. “I think it is more important that parents realize that children with vision problems may also have attention problems and that both require professional diagnosis and treatment.”
So if your child has vision problems, should you be worried about them developing ADHD?
“I wouldn’t worry about them developing ADHD,” DeCarlo said. “But if they seemed to have symptoms of ADHD I’d make sure that all of their vision needs are addressed through proper eye care and vision rehabilitation and would have them evaluated by an expert in attention disorders.”
Source: Adam Pope – UAB
Image Credit: Image is adapted from the UAB press release.
Original Research: Abstract for “ADHD and Vision Problems in the National Survey of Children’s Health” by DeCarlo, Dawn K.; Swanson, Mark; McGwin, Gerald; Visscher, Kristina; and Owsley, Cynthia in Optometry & Vision Science. Published online February 6 2016 doi:10.1097/OPX.0000000000000823
ADHD and Vision Problems in the National Survey of Children’s Health
Purpose: To compare the prevalence of attention deficit/hyperactivity disorder (ADHD) in children with normal vision and with vision problems not correctable with glasses or contact lenses (vision problems) as determined by parent report in a nationwide telephone survey.
Methods: This cross-sectional study included 75,171 children without intellectual impairment aged 4 to 17 years participating in the 2011 to 2012 National Survey of Children’s Health, conducted by the U.S. Centers for Disease Control and Prevention. Demographic information and information regarding vision and ADHD status were obtained by parent interview. Questions asked whether they had ever been told by a doctor or health care provider that the child had a vision problem not correctable with glasses or contact lenses, ADHD, intellectual impairment, or one of 13 other common chronic conditions of childhood. A follow-up question asked about condition severity. The main outcome measure was current ADHD.
Results: The prevalence of current ADHD was greater (p < 0.0001) among children with vision problems (15.6%) compared with those with normal vision (8.3%). The odds of ADHD compared with those of children with normal vision were greatest for those with moderate vision problems (odds ratio [OR], 2.6; 95% confidence interval [95% CI], 1.7 to 4.4) and mild vision problems (OR, 1.8; 95% CI, 1.1 to 2.9). Children with severe vision problems had similar odds of ADHD to those of children with normal vision perhaps because of the small numbers in this group (OR, 1.6; 95% CI, 0.8 to 3.1). In multivariable analysis adjusting for confounding variables, vision problems remained independently associated with current ADHD (OR, 1.8; 95% CI, 1.2 to 2.7).
Conclusions: In this large nationally representative sample, the prevalence of ADHD was greater among children with vision problems not correctable with glasses or contacts. The association between vision problems and ADHD remains even after adjusting for other factors known to be associated with ADHD.
“ADHD and Vision Problems in the National Survey of Children’s Health” by DeCarlo, Dawn K.; Swanson, Mark; McGwin, Gerald; Visscher, Kristina; and Owsley, Cynthia in Optometry & Vision Science. Published online February 6 2016 doi:10.1097/OPX.0000000000000823