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Preschool vision screening: a prospective comparative evaluation

L C Bray1, M P Clarke, S N Jarvis

  • 1Department of Ophthalmology, Royal Victoria Infirmary, Newcastle upon Tyne, UK.

Eye (London, England)
|January 1, 1996
PubMed
Summary
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Orthoptic preschool vision screening identified more amblyopia cases but did not improve overall outcomes compared to health visitor or GP screening. Further trials are needed for specific amblyopia types.

Area of Science:

  • Ophthalmology
  • Public Health
  • Pediatrics

Background:

  • Preschool vision screening programs aim to detect and treat vision defects early.
  • Orthoptic screening was piloted in Newcastle to assess its effectiveness compared to other healthcare providers.

Purpose of the Study:

  • To compare the visual outcomes at age 7 years of children screened for vision defects at age 3 by orthoptists, health visitors, or general practitioners.
  • To evaluate the effectiveness of primary orthoptic preschool vision screening.

Main Methods:

  • A retrospective review of a pilot study comparing three matched cohorts of children screened at age 3.
  • Visual outcomes at age 7 were compared between children screened by orthoptists, health visitors, and general practitioners.

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Main Results:

  • Manifest, large angle strabismus presented at similar ages and numbers across all screening groups.
  • Orthoptic screening identified more cases of amblyopia linked to microtropia and anisometropia.
  • Overall amblyopia prevalence at age 7 remained similar across the different screening cohorts.

Conclusions:

  • The study does not support the nationwide implementation of primary orthoptic preschool vision screening.
  • Further prospective treatment trials are necessary for amblyopia associated with microtropia and anisometropia.