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The global burden of visual difficulty in low, middle, and high income countries.
Using a world-wide, population-based dataset of adults, we sought to determine the frequency of far visual difficulty and its associated risk factors.The World Health Survey (WHS) was conducted in 70 countries throughout the world in 2003 using a random, multi-stage, stratified, cluster sampling des...
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| Main Authors: | , , , , , , |
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| Formato: | Artigo |
| Idioma: | Inglês |
| Publicado em: |
Public Library of Science (PLoS)
2013-01-01
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| Colecção: | PLoS ONE |
| Acesso em linha: | http://europepmc.org/articles/PMC3651198?pdf=render |
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