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(Pediatrics in Review. 2007;28:54-61.)
© 2007 American Academy of Pediatrics
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| Introduction |
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Significant problems affecting vision are common in children. Vision problems occur in 5% to 10% of all preschoolers and include refractive error, strabismus, and amblyopia. Strabismus is present in 4% of preschool-age children, and amblyopia affects up to 40% of those having strabismus. Major refractive errors requiring correction occur in 5% to 7% of preschool-age children. Cataracts in children are far less common (0.1% incidence), but vision can be affected seriously without early treatment. A simple screening can check effectively for such problems during a time when treatment is most critical without requiring all patients to have a "gold standard" complete eye evaluation at every age, saving both time and health-care resources.
Screening improves visual acuity. In a randomized, longitudinal study, intensive early screening led to a 60% decreased prevalence of amblyopia and improved visual acuity compared with a one-time screening at 37 months of age. (1) Amblyopia responds to therapy, and results are best when treatment is started early in life. The same study showed a 70% lower prevalence of residual amblyopia after treatment when therapy was initiated before age 3 years. The single most effective screening test for the presence of amblyopia is the determination of visual acuity via noninvasive screening.
The consequences of not finding vision-related problems can include adverse effects on school and social performance as well as adult
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