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Guidelines for automated preschool vision screening: a 10-year, evidence-based update
Sean P Donahue1, Brian Arthur, Daniel E Neely
1Department of Ophthalmology and Visual Sciences, Vanderbilt University Medical Center, Nashville, TN 37232-8808, USA. sean.donahue@vanderbilt.edu
Insights
Updated guidelines for preschool vision screening emphasize age-based criteria for detecting amblyopia risk factors (ARF) and amblyopia. These recommendations aim to improve screening accuracy and treatment effectiveness in young children.
Area of Science:
- Ophthalmology
- Pediatric Medicine
- Public Health
Background:
- The American Association for Pediatric Ophthalmology and Strabismus (AAPOS) established automated preschool vision screening criteria in 2003.
- Recent literature necessitates an update to these criteria, considering new data on amblyopia risk factors (ARF), treatment efficacy, and screening technologies.
Purpose of the Study:
- To update the AAPOS criteria for automated preschool vision screening based on current scientific evidence.
- To provide age-specific referral guidelines for refractive amblyopia risk factors and direct amblyopia detection.
Main Methods:
- A comprehensive review of recent literature, including epidemiologic studies, natural history studies, amblyopia treatment trials, and screening technology field studies.
- Analysis of prevalence data for amblyopia risk factors and age-related treatment effectiveness.
Main Results:
- Amblyopia risk factors are more prevalent than previously thought; many low-magnitude ARFs do not lead to amblyopia, and some cases respond well to spectacles alone.
- High-magnitude ARFs significantly increase amblyopia likelihood. Amblyopia remains treatable until 60 months, with decreasing effectiveness after age 5.
- Specific age-based refractive error referral criteria were proposed for children aged 12-48 months and older, alongside criteria for media opacities and strabismus detection.
Conclusions:
- Updated AAPOS guidelines provide age-specific criteria for vision screening, improving the detection of amblyopia risk factors and amblyopia in preschool children.
- These revised guidelines aim to enhance the reporting of screening results and facilitate the comparison of different screening technologies.
- The updated criteria emphasize high specificity for ARF detection in younger children and high sensitivity for amblyopia detection in older children.
Abstract:
In 2003 the American Association for Pediatric Ophthalmology and Strabismus Vision Screening Committee proposed criteria for automated preschool vision screening. Recent literature from epidemiologic and natural history studies, randomized controlled trials of amblyopia treatment, and field studies of screening technologies have been reviewed for the purpose of updating these criteria. The prevalence of amblyopia risk factors (ARF) is greater than previously suspected; many young children with low-magnitude ARFs do not develop amblyopia, and those who do often respond to spectacles alone. High-magnitude ARFs increase the likelihood of amblyopia. Although depth increases with age, amblyopia remains treatable until 60 months, with decline in treatment effectiveness after age 5. US Preventive Services Task Force Preventative Services Task Force guidelines allow photoscreening for children older than 36 months of age. Some technologies directly detect amblyopia rather than ARFs. Age-based criteria for ARF detection using photoscreening is prudent: referral criteria for such instruments should produce high specificity for ARF detection in young children and high sensitivity to detect amblyopia in older children. Refractive screening for ARFs for children aged 12-30 months should detect astigmatism >2.0 D, hyperopia >4.5 D, and anisometropia >2.5 D; for children aged 31-48 months, astigmatism >2.0 D, hyperopia > 4.0 D, and anisometropia >2.0 D. For children >49 months of age original criteria should be used: astigmatism >1.5 D, anisometropia>1.5 D, and hyperopia >3.5 D. Visually significant media opacities and manifest (not intermittent) strabismus should be detected at all ages. Instruments that detect amblyopia should report results using amblyopia presence as the gold standard. These new American Association for Pediatric Ophthalmology and Strabismus Vision Screening Committee guidelines will improve reporting of results and comparison of technologies.
