Effective coverage of refractive error care
A simple pair of spectacles can transform lives for hundreds of millions — yet glasses remain out of reach for far too many. Best viewed on desktop — scroll slowly to explore the full data story.
Bourne R, et al. Effective refractive error coverage in adults: a systematic review and meta-analysis of updated estimates from population-based surveys in 76 countries modelling the path towards the 2030 global target. Lancet Glob Health. 2025.
World Health Organization, Eyeglasses coverage for distance refractive error, 2025.
Ata Adnan, Karen Hernández
Explore topics
Data Story
Magnitude of sight loss
Discover how sight loss affects over a billion people worldwide—and why the number is still rising.
Data Story
Causes of sight loss
The leading causes of sight loss are simple to treat—discover the conditions driving the global burden of sight loss.
Data Story
Gender
Uncover the persistent gender gap in eye health, with women bearing a disproportionate burden of sight loss.
Featured news
Bhutan conducts first-ever RARE study to estimate the national eREC
Bhutan’s first Rapid Assessment of Refractive Error study reports effective refractive error coverage of 74% for distance and 31% for near vision.
Egypt becomes the 27th country globally to eliminate trachoma
Egypt has successfully eliminated trachoma as a public health problem, becoming the 7th country in the WHO Eastern Mediterranean Region and the 27th globally to achieve this milestone.
View sight loss data by countries
Explore and understand how sight loss affects different parts of the world and the impact that it has.
View by country
