• J Formos Med Assoc · Jan 2021

    Refinement strategies in photoscreening for the detection of amblyopia risk factors in 12-to-24-month-old children.

    • Yao-Lin Liu, Chia-Jung Lee, Jao-Shwann Liang, Shu-Wen Chang, and Tzu-Hsun Tsai.
    • Department of Ophthalmology, National Taiwan University Hospital, National Taiwan University, Taipei, Taiwan; Department of Ophthalmology, Far Eastern Memorial Hospital, New Taipei City, Taiwan.
    • J Formos Med Assoc. 2021 Jan 1; 120 (1 Pt 1): 137-144.

    PurposeTo establish an appropriate clinical protocol for early photoscreening in 12-to-24-month-old children at pediatric well-baby clinics.MethodsThis prospective study included a total of 277 children aged 12-24 months who visited a pediatric well-baby clinic. All participants underwent: 1) inquiry of medical history; 2) photoscreening with PlusoptiX A12; and 3) comprehensive ophthalmologic examinations. The optimal referral cut-off point for PlusoptiX was determined by receiver operating characteristic analyses. A high-risk subgroup was defined as having a birth weight <3000 g or a history of major systemic diseases, based on the results of multivariable risk factor analysis from children's medical history. A strategy of selective photoscreening focusing on the high-risk subgroup was evaluated. The main outcome measures included sensitivity, specificity, and positive and negative predictive values.ResultsThe prevalence of amblyopia risk factors in our study population was 12.3%. A total of 172 children (62.1%) were assigned to the high-risk subgroup. Compared with the nonselective photoscreening of all 277 children, selective photoscreening of the high-risk children yielded a higher positive predictive value (59.6% vs. 46.7%, p = 0.001) while showing no difference in sensitivity (82.3% vs. 85.3%, p = 0.32), specificity (92.2% vs, 86.4%, p = 0.05), and negative predictive value (97.4% vs. 97.6%, p = 0.50).ConclusionAt pediatric well-baby clinics, selective photoscreening among 12-to-24-month-old children with a birth weight <3000 g or a history of major systemic diseases helped reducing the number of children need to be screened and conserving medical resources yet identifying children at risk for timely eye care.Copyright © 2020. Published by Elsevier B.V.

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