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Updated: May 20, 2026

Subjective Refraction Test Using a Smartphone for Vision Screening
Published on: October 18, 2024
Vision screening across the world
Noelle S Matta1, David I Silbert,
1Family Eye Group, Lancaster, Pennsylvania 17601, USA. noellematta@gmail.com
Introduction:
Pediatric vision screening is a global need. The International Orthoptic Association (IOA), comprised of fifteen full member countries and five associate member countries, is an excellent source of information to determine the current state of international vision screening efforts globally.
Methods:
An e-mail survey was sent to representatives of member countries of the IOA.
Results:
Of the eighteen surveys returned, 89% of countries have pediatric vision screening programs, 44% have a national program, 56% are government funded, and 28% are obligatory.
Conclusion:
This survey sheds light on the state of international pediatric vision screening. Countries may use this information to help develop new methods and improve existing ones in order to enhance vision screening globally.

