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David I. Silbert, Noelle S. Matta; Flip Chart Visual Acuity Screening Compared To The Plusoptix S09 Photoscreener Performed By A Screener. Invest. Ophthalmol. Vis. Sci. 2011;52(14):2517.
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To determine the reliability of lay visual acuity screening compared to the plusoptiX S09 photoscreener for the detection of amblyopia risk factors.
One lay screener received basic training in how to use a 10 foot Patti Pics single crowded chart with patched acuity, and the plusoptiX S09 photoscreener. Lay screening was done on children age 3 to10. All children had the lay screening done immediately before a pediatric ophthalmology examination. Children were considered to be a refer if their vision was 20/40 or worse in either eye.
72 children were screened in total ranging from age 3 to 10 years old (average 5 years). The flip chart was found to have a sensitivity of 83%, specificity of 47%, false positive rate of 53% and false negative rate of 17%. The plusoptiX S09 was found to have a sensitivity of 92%, specificity of 88%, false positive rate of 11% and false negative rate of 8%.
: Photoscreening was found to perform better than flip chart acuity screening by a lay screener in the same cohort of children. The plusoptiX S09 photoscreener operated by a lay screener is an effective method to screening for amblyopia risk factors.
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