A new study provides the first clear evidence that vision or eye
problems are rarely the cause of recurring headaches in children, even if the
headaches usually strike while the child is doing schoolwork or other visual
tasks. Many parents assume that frequent headaches mean their child needs
glasses, so they ask their doctor to refer their child for an eye exam. This
study was conducted by pediatric ophthalmologists who wanted to find reliable
answers for parents, family doctors and pediatricians facing this common health
question.
The research is being presented today at the 116th Annual Meeting
of the American Academy of Ophthalmology, conducted jointly this year with the
Asia-Pacific Academy of Ophthalmology.
In this retrospective study, which was conducted at the
ophthalmology clinic of Albany Medical Center in New York state, researchers
reviewed the medical records of 158 children under age 18 who were seen at the clinic
for frequent headaches from 2002-11. All of the children received complete eye
exams by the clinic's ophthalmologists.
No significant correlation was found between their frequent
headaches and a need for vision correction. The researchers reached this
conclusion by comparing the results of the clinic's exams of the children with
headaches to the records of their previous eye exams and other relevant medical
care. Eye health and vision test results remained unchanged from earlier exams
for 75 percent of the children. Also, children who already had eyeglasses were
not found to need new prescriptions at the time they were seen at the clinic
for headaches. Although about 14 percent of the children reported that their
headaches occurred while doing visual tasks like homework, and about nine
percent reported visual symptoms associated with their headaches, a need for
vision correction did not appear to be the primary cause or a significant
factor in any of these cases, according to the study.
The researchers considered it positive that most of the children's
headaches resolved over time. Follow up reports from parents showed that
headaches improved in 76.4 percent of all study subjects, including those who
did and those who did not receive new vision correction prescriptions. Children
who received new prescriptions were not more likely than others to have their
headaches improve. Assessing the causes of the headaches and addressing the
children's long-term outcomes were beyond the scope of this study.
"We hope our study will help reassure parents that in most
cases their children's headaches are not related to vision or eye problems, and
that most headaches will clear up in time," said Zachary Roth, M.D., who
led the research team. "The information should also be useful to family
doctors and pediatricians in caring for children and parents who have this
common health concern."
About thirty percent of the children in the study had eye
conditions that went beyond the need for vision correction, including strabismus
(misaligned eyes) amblyopia ("lazy eye") or other rarer, more serious
conditions. Seventeen percent had a family history of migraine. Because this
was a retrospective study, the researchers were unable to connect these factors
with headache causes.
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