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Community based vision screening in preschool children; performance of the Spot Vision Screener and optotype testing
- Publication Year :
- 2022
- Publisher :
- Taylor & Francis, 2022.
-
Abstract
- Children’s vision screening children commonly uses optotype-based visual acuity or instrument-based methods measuring amblyogenic risk factors (ARFs). To compare the performance of the Spot Vision Screener (SVS) (PediaVision, Welch Allyn, NY) and a nurse-administered visual acuity screen (NVAS) in identifying ARFs and decreased visual acuity. A prospective, cross-sectional population-based study of preschool children in South-East Queensland, Australia. Eligible participants had both forms of screening by trained community nurses. All children with an abnormal result by either method as well as a cohort of randomly selected children who passed both assessments were assessed at a tertiary paediatric ophthalmology clinic. Over a 10 month period, 2237 children (mean age; 64.4 ± 4.0 months) were screened from 38 schools. 6.4% of children failed SVS and 8.3% failed NVAS (with 3.8% overlap, failing both). The positive predictive value (PPV) in identifying either ARFs and/or reduced VA for the SVS and NVAS was 70.4% (95% Confidence Interval (CI): 61.6%–78.2%) and 60.5% (95% CI: 52.6%–67.9%) respectively. Highest PPV to detect either ARFs and/or reduced VA was achieved by a ‘hybrid’ method by combining failed NVAS and failed SVS: 91.0% (95% CI: 82.4 to 96.3) but this would risk children with sight impairment being missed in the community. To our knowledge, this is the first population-based study providing detailed comparative measures of diagnostic accuracy for NVAS and SVS in preschool children. One in ten preschool children failed one or both screens. A number of children who required ophthalmic intervention were missed if only one screening method was utilized.
Details
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....3d3c32883a6ae1796076daba4edf8807
- Full Text :
- https://doi.org/10.6084/m9.figshare.16082880