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Updated: Dec 14, 2025

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A One-Step, Streamlined Children's Vision Screening Solution Based on Smartphone Imaging for Resource-Limited Areas:

Shuoxin Ma1,2, Yongqing Guan3, Yazhen Yuan3

  • 1College of Software Engineering, Southeast University, Nanjing, China.

JMIR Mhealth and Uhealth
|July 17, 2020
PubMed
Summary

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This study developed a smartphone-based vision screening for children in resource-limited areas. The effective and scalable solution accurately detects amblyopia and myopia risk factors, improving school performance.

Area of Science:

  • Ophthalmology
  • Public Health
  • Medical Technology

Background:

  • Vision screening in young children offers significant value in developing regions.
  • Early intervention prevents vision impairment, improving school performance and future workforce quality.
  • Leveraging low-skilled healthcare workers with smartphones offers a scalable model for resource-limited areas.

Purpose of the Study:

  • To develop and evaluate a comprehensive vision screening solution for school children in resource-limited settings.
  • The solution addresses major risk factors for amblyopia and myopia, integrating digital record-keeping.
  • Utilizes low-cost tools and low-skilled technicians without compromising quality or efficiency.

Main Methods:

  • A smartphone application was developed for a standardized screening procedure.
Keywords:
anisometropiamHealthmyopiaphotorefractionresource-limited applicationscreeningstrabismusvision screening

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  • Utilized AI and image processing for automated analysis of interpupillary distance, visual axis alignment, and refractive error.
  • Measured risk for strabismus, myopia, and anisometropia in a 10-second procedure.

    • Main Results:

    • A preliminary evaluation in China covered 100 students aged 8-10.
    • Measurement success rates were 87% (1-shot) and 100% (2-shot).
    • High sensitivity and specificity were achieved for strabismus (0.80/0.98), myopia (0.83/1.00), and anisometropia (0.80/1.00).

    Conclusions:

    • The developed vision screening program is effective, efficient, and scalable.
    • Optimized for practicality and robustness, making it ready for deployment.
    • Validated against design specifications, demonstrating feasibility in resource-limited areas.