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Repeat Retinomax screening changes positive predictive value.

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Repeating autorefraction measurements in children referred from vision screening significantly improves risk stratification. A second screening identifies fewer children needing further examination, potentially reducing costs and unnecessary treatments.

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Area of Science:

  • Ophthalmology
  • Pediatric Optometry
  • Vision Science

Background:

  • Preschool vision screening programs aim to detect vision impairments early.
  • Autorefraction is a common screening tool, but its reliability with repeated measures needs evaluation.

Purpose of the Study:

  • To quantify changes in autorefraction measurements with repeated use of the Retinomax device.
  • To assess the clinical implications of these repeated autorefraction readings.

Main Methods:

  • Children referred from preschool screening underwent repeat autorefraction and cycloplegic retinoscopy.
  • Intraclass correlation coefficient (ICC) calculated to assess measurement changes.
  • Case definition based on AAPOS amblyogenic risk factors.

Main Results:

  • Repeat autorefraction showed an ICC of 0.70 for mean sphere in both eyes.
  • 26.5% of initially referred children passed repeat screening, with only 4.1% meeting case definition.
  • 73.5% failed repeat screening, and 57.4% of this subgroup met case definition (P < 0.001).

Conclusions:

  • Clinically significant variability in autorefraction exists with repeated measures.
  • Rescreening referred children allows for risk stratification and identification of those truly needing examination.
  • Implementing repeat screening may avoid unnecessary costs and overtreatment.