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Related Experiment Videos

Preschool vision screening.

S N Jarvis1, R C Tamhne, L Thompson

  • 1Department of Child Health, Medical School, University of Newcastle upon Tyne.

Archives of Disease in Childhood
|March 1, 1991
PubMed
Summary
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Community orthoptist screening for preschool vision defects is more effective than health visitor or primary care screening. Early detection and treatment of visual acuity loss were significantly improved with orthoptist-led screening.

Area of Science:

  • Ophthalmology
  • Public Health
  • Pediatrics

Background:

  • Preschool vision screening programs lack robust evidence of effectiveness.
  • Existing screening methods may not adequately detect vision defects in young children.

Purpose of the Study:

  • To compare the effectiveness of three different preschool vision screening methods.
  • To evaluate screening sensitivity and the incidence of treated visual and ocular defects.

Main Methods:

  • A comparative trial involving approximately 7000 children aged 5 months and 30 months.
  • Follow-up over 18 months, with data from ophthalmology outpatients and optician records.
  • Screening methods included community orthoptist surveillance, health visitor surveillance, and primary care screening for squint.

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Main Results:

  • Orthoptist screening at 35 months showed superior sensitivity (100%) compared to health visitor (50%) and primary care (50%) screening.
  • Higher incidence of treated target conditions (17 per 1000 person-years) with orthoptist screening versus others (3-5 per 1000 person-years).
  • Orthoptist screening identified more cases of straight-eyed visual acuity loss, which were treated.

Conclusions:

  • Community-based orthoptist screening is a more effective method for preschool vision screening than current alternatives.
  • Screening younger cohorts (5-9 months) yielded poor results across all tested methods.
  • Targeted screening by orthoptists improves detection and treatment of significant visual impairments in preschoolers.