The global burden of visual difficulty in low, middle, and high income countries.

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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Bibliographic Details
Main Authors: Ellen E Freeman, Marie-Hélène Roy-Gagnon, Elodie Samson, Slim Haddad, Marie-Josée Aubin, Claudia Vela, Maria Victoria Zunzunegui
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2013-01-01
Series:PLoS ONE
Online Access:http://europepmc.org/articles/PMC3651198?pdf=render

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http://europepmc.org/articles/PMC3651198?pdf=render

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