The American Association for Pediatric Ophthalmology and Strabismus (AAPOS) published revised guidelines about amblyopia risk factors in 2012. AAPOS determined that the amount of myopia that puts a child at risk for amblyopia varies according to age, since the amount of myopia normally naturally lessens as a child ages and his eyes grow. For children aged 12-30 months, AAPOS guidelines consider the child at risk for myopia greater than -3.5 diopters; for children aged 31-48 months, myopia greater than -3.0 diopters is considered a risk factor for amblyopia, and for children 49 months and older, nearsightedness of more than -1.5 diopters is considered an amblyopia risk factor. iScreen Vision uses AAPOS guidelines in analyzing images and determining whether or not a child who is screened or tested for amblyopia should be referred for myopia.
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