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Assessing visual function in children with complex disabilities: the Bradford visual function box.

Rachel F Pilling1, Louise Outhwaite1, Alison Bruce2

  • 1Department of Ophthalmology, Bradford Teaching Hospitals NHS Foundation Trust, Bradford, UK.

The British Journal of Ophthalmology
|December 3, 2015
PubMed
Summary
This summary is machine-generated.

The Bradford visual function box (BVFB) provides a reliable method for assessing vision in children with severe learning disabilities. This functional visual assessment tool demonstrates good intertester agreement, proving effective when traditional tests fail.

Keywords:
Child health (paediatrics)Diagnostic tests/InvestigationVisionVisual perception

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Area of Science:

  • Ophthalmology
  • Developmental Pediatrics
  • Special Education

Background:

  • Assessing vision in children with severe learning disabilities presents unique challenges.
  • Traditional tests may be ineffective due to non-responsiveness to monochrome stimuli.
  • Objective visual function assessment is recommended for poorly cooperative children.

Purpose of the Study:

  • To establish the intertester validity of the Bradford visual function box (BVFB).
  • To evaluate the BVFB as a functional visual assessment tool for children with complex disabilities.

Main Methods:

  • The Bradford visual function box (BVFB), featuring colorful toys, was used.
  • 22 children with severe learning disability were assessed by two independent practitioners on separate occasions.
  • Assessors were blinded to each other's findings.

Main Results:

  • The BVFB demonstrated good intertester agreement with a weighted kappa (κ) of 0.768.
  • No significant difference in results was found between the two assessors in 15 out of 22 children.
  • The tool showed reliability in assessing visual function.

Conclusions:

  • The BVFB is a reliable and effective tool for assessing visual function in children with severe learning disabilities, especially when other methods are unsuccessful.
  • The BVFB addresses the need for a quick, portable, and objective visual assessment tool.
  • This functional visual assessment offers a viable option for children unable to respond to formal testing.