AAPOS uniform guidelines for instrument-based pediatric vision screen validation 2021.

Area of Science:

• Ophthalmology
• Pediatric Vision Science
• Medical Device Technology

Background:

• Instrument-based pediatric vision screening technology has advanced, necessitating updated guidelines.
• Previous American Association for Pediatric Ophthalmology and Strabismus (AAPOS) guidelines (2003, updated 2013) aimed to detect amblyopia risk factors (ARFs) and refractive errors.
• Clinical experience indicated high over-referral rates for non-amblyopic symmetric astigmatism, prompting guideline revision.

Purpose of the Study:

• To revise AAPOS guidelines for pediatric vision screening devices.
• To establish updated criteria for detecting amblyopia risk factors and visually significant refractive errors.
• To address over-referral issues identified with previous guidelines, particularly for symmetric astigmatism.

Main Methods:

• Expert consensus from the AAPOS Vision Screening and Research Committees informed the guideline revision.
• Defined gold-standard confirmatory examination failure levels for automated screening devices (2021 recommendations).
• Included specific thresholds for anisometropia, hyperopia, astigmatism, myopia, media opacity, and manifest strabismus.

Main Results:

• Revised guidelines simplify examination failure criteria and raise the threshold for symmetric astigmatism.
• The threshold for amblyogenic anisometropia has been decreased.
• New criteria target lower magnitudes of symmetric astigmatism and myopia after age 4, considering school performance implications.

Conclusions:

• Updated AAPOS guidelines aim to improve the accuracy of pediatric vision screening.
• Revised criteria seek to reduce over-referrals while maintaining sensitivity for critical visual impairments.
• Guidelines now consider refractive errors that may impact academic performance, even with low amblyopia risk.