SAN DIEGO — Nearly 70% of children diagnosed with concussion had at least one vision problem, according to data presented here.
Christina L. Master, MD, of the Children’s Hospital of Philadelphia in Philadelphia, and colleagues assessed visual symptoms, visual acuity, eye alignment, near point of convergence, vergence amplitude/facility, accommodative amplitude/facility and saccadic eye movement speed and accuracy among 100 children diagnosed with concussion. Study participants had a mean age of 14.5 years.
Sixty-nine percent of children had vision problems, 55% had vestibular problems, 49% had both vision and vestibular deficits, 20% had only vestibular deficits and 16% had only vision deficits.
Fifty-one percent of children had accommodative disorders, 49% had convergence insufficiency and 29% had saccadic dysfunction. Of those diagnosed with convergence insufficiency, 36% had an associated accommodative disorder.
Researchers used the Convergence Insufficiency Symptom Survey (CISS) to assess visual symptoms. Children without a vision problem had a mean CISS score of 16.6, compared with 22.2 among children with significant vision problems.
Vision problems did not differ between children with recent or longstanding concussions.
Children with vision problems had deficits in verbal memory (P=0.004) and visual motor (P=0.001) scores on computerized neurocognitive testing.
“In conclusion, there are eye tracking abnormalities that are too be seen if you're looking for them. Maybe that should be part of our standard screening. Vestibular therapy has become pretty popular and vestibular therapy will address vestibular deficits, but it does not address convergence insufficiency, so there is a piece that’s missing there,” study researcher Matthew F. Grady, MD, said during a press conference.
For more information:
Master CL. Abstract #26430. Presented at: 2014 AAP National Conference and Exhibition; Oct. 11-14, San Diego.
Disclosure: The researchers report no relevant financial disclosures.