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Updated: Jul 2, 2026

Subjective Refraction Test Using a Smartphone for Vision Screening
Published on: October 18, 2024
S Resnikoff1, I Kocur, D E Etya'ale
1Prevention of Blindness and Deafness, Chronic Diseases Prevention and Management, World Health Organization, 20 Avenue Appia, CH-1211 Geneva 27, Switzerland.
The global Vision 2020 initiative, launched in 1999, aims to eliminate avoidable blindness. It has expanded partnerships and reduced blindness from onchocerciasis and trachoma, though cataracts remain a leading cause.
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