United States Medical Expenditure Panel Survey 2009 Survey: Cross-sectional - Health facility - Household - Individual - Interview - Longitudinal - Nationally representative - Subnationally representative GHDx Entry last modified on: Jul 15, 2022
Prevalence and causes of blindness, low vision and status of cataract in 50 years and older citizen of Qatar – a community based survey Scientific literature GHDx Entry last modified on: Jul 20, 2021
Egypt - Fayoum Kasr Baseal Rapid Assessment of Avoidable Blindness 2009 Survey GHDx Entry last modified on: Jan 18, 2023
Survey on Visual Impairment and Refractive Errors on Ta'u Island, American Samoa Scientific literature GHDx Entry last modified on: Mar 3, 2019
Visual status and ocular morbidity in older adults living in residential care Scientific literature GHDx Entry last modified on: Mar 3, 2019
United Kingdom - Welsh Health Survey 2009 - Welsh Government Survey: Household - Individual - Interview GHDx Entry last modified on: Aug 5, 2021
Prevalence of Visual Impairment and Refractive Errors in Children of South Sinai, Egypt Scientific literature GHDx Entry last modified on: May 30, 2020
Mexico WHO Study on Global AGEing and Adult Health 2009-2010 Mexico - Study on Global Ageing and Adult Health-2009/10, Wave 1 Survey: Household - Individual - Interview - Longitudinal - Nationally representative - Subnationally representative - Urban-rural representative - Verbal autopsy GHDx Entry last modified on: Jan 31, 2024
Xerophthalmia in a traditional Quran boarding school in Sudan Scientific literature GHDx Entry last modified on: Jul 20, 2021
Egypt - Kafarelsheakhshabas Rapid Assessment of Avoidable Blindness 2009 Survey GHDx Entry last modified on: Jan 18, 2023
Rapid assessment of avoidable blindness and diabetic retinopathy in Taif, Saudi Arabia Scientific literature GHDx Entry last modified on: Jul 20, 2021
United Kingdom Health Survey for England 2009-2010 - HSCIC Survey: Household - Individual - Interview GHDx Entry last modified on: Aug 5, 2021
Prevalence and causes of blindness in children in Vietnam Scientific literature GHDx Entry last modified on: Jul 20, 2021
Causes and five-year incidence of blindness and visual impairment in urban Southern China: the Liwan Eye Study Scientific literature GHDx Entry last modified on: Mar 8, 2024
Rapid assessment of avoidable blindness in the northern eThekwini district of KwaZulu-Natal Province, South Africa Scientific literature GHDx Entry last modified on: Jul 20, 2021
Cambodia Socio-Economic Survey 2009 Survey: Community - Cross-sectional - Household - Individual - Interview - Nationally representative - Urban-rural representative GHDx Entry last modified on: Sep 6, 2023
Determinants of vitamin A deficiency amongst children in Aligarh District, Uttar Pradesh Scientific literature GHDx Entry last modified on: Feb 7, 2024
Blindness and Visual Impairment in an Urban West African Population: The Tema Eye Survey Scientific literature GHDx Entry last modified on: Jul 10, 2020
Prevalence and causes of corneal blindness Scientific literature GHDx Entry last modified on: Mar 3, 2019
Prevalence and associated factors of myopia in high-school students in Beijing Scientific literature GHDx Entry last modified on: Jul 20, 2021
Prevalence of clinical and sub-clinical vitamin A deficiency among rural preschool children of West Bengal, India Scientific literature GHDx Entry last modified on: Jul 20, 2021
Yemen - Lahj Rapid Assessment of Avoidable Blindness 2009 Survey GHDx Entry last modified on: Jan 18, 2023
Rapid assessment of avoidable blindness in two northern provinces of Burundi without eye services Scientific literature GHDx Entry last modified on: Jul 20, 2021
Refractive error and visual impairment in private school children in Ghana Scientific literature GHDx Entry last modified on: Jul 20, 2021
Magnitude and causes of childhood blindness and severe visual impairment in Sekoru District, Southwest Ethiopia: a survey using the key informant method Scientific literature GHDx Entry last modified on: Jul 20, 2021
Using key informant method to assess the prevalence and causes of childhood blindness in Xiu'shui County, Jiangxi Province, Southeast China Scientific literature GHDx Entry last modified on: Feb 8, 2024
Prevalence of visual impairment and uncorrected refractive error - report from a Canadian urban population-based study Scientific literature GHDx Entry last modified on: Mar 3, 2019
Prevalence of amblyopia among secondary school students in Calabar, south-south Nigeria Scientific literature GHDx Entry last modified on: Mar 3, 2019
Prevalence and associated risk factors of myopic maculopathy in elderly Chinese: the Shihpai eye study Scientific literature GHDx Entry last modified on: Mar 3, 2019
Mali National Health Information System (SNIS) Statistical Yearbook 2009 Annuaire 2009 Système National d'Information Sanitaire (SNIS) Report: Epi surveillance GHDx Entry last modified on: Mar 13, 2024
Visual impairment and spectacle coverage rate in Baoshan district, China: population-based study Scientific literature GHDx Entry last modified on: Jul 15, 2020
Rapid assessment of avoidable blindness in amran and lahj governorates of Yemen Scientific literature GHDx Entry last modified on: Mar 3, 2019
Factors associated with myopia in school children in China: the Beijing childhood eye study Scientific literature GHDx Entry last modified on: Jul 20, 2021
United States National Health Interview Survey 2009 Survey: Cross-sectional - Household - Individual - Interview - Nationally representative GHDx Entry last modified on: Dec 14, 2023
Visual impairment in the 40- to 64-year-old population of Shahroud, Iran Scientific literature GHDx Entry last modified on: Jul 14, 2020
Maldives Demographic and Health Survey 2009 Survey: Cross-sectional - De facto - De jure - Household - Individual - Interview - Nationally representative GHDx Entry last modified on: Sep 6, 2023
Characterising visual deficits in children of an urban elementary school in Taiwan Scientific literature GHDx Entry last modified on: Mar 3, 2019
Canada Community Health Survey - Healthy Aging 2008-2009 CCHS - Healthy Aging Survey: Cross-sectional GHDx Entry last modified on: Aug 5, 2021
Kenya Demographic and Health Survey 2008-2009 Survey: Cross-sectional - GPS coordinates (GIS) - Household - Individual - Interview - Nationally representative - Subnationally representative - Urban-rural representative GHDx Entry last modified on: Jul 24, 2024
Madagascar Demographic and Health Survey 2008-2009 Enquête Démographique et de Santé 2008-2009 Survey: GPS coordinates (GIS) - Household - Individual - Interview - Nationally representative - Verbal autopsy GHDx Entry last modified on: Jul 24, 2024
Nigeria Living Standards Survey 2008-2010 Harmonized Nigeria Living Standards Survey (HNLSS) 2009, First Round Survey: Cross-sectional - Household - Individual - Interview - Nationally representative - Subnationally representative GHDx Entry last modified on: Sep 6, 2023
Cambodia Anthropometric Survey 2008 - National Institute of Statistics Survey: Cross-sectional - Household - Individual - Interview - Nationally representative GHDx Entry last modified on: Oct 2, 2023
North Korea Population Census 2008 Census: Nationally representative - Subnationally representative - Urban-rural representative - Verbal autopsy GHDx Entry last modified on: Sep 6, 2023
Guatemala Reproductive Health Survey 2008-2009 Encuesta Nacional de Salud Materno Infantil (ENSMI) 2008-2009 Survey: Cross-sectional - GPS coordinates (GIS) - Household - Individual - Interview GHDx Entry last modified on: Aug 23, 2023
Tanzania National Panel Survey 2008-2009 Tanzania National Panel Survey 2008-2009 (NPS Wave 1) Survey: Community - GPS coordinates (GIS) - Household - Interview - Nationally representative GHDx Entry last modified on: Aug 13, 2024
Dominican Republic Rapid Assessment for Avoidable Blindness Survey 2008 Survey: Cross-sectional - Individual - Interview GHDx Entry last modified on: Jan 18, 2023
South Africa Living Conditions Survey 2008-2009 Survey: Household - Nationally representative GHDx Entry last modified on: Aug 5, 2021
Brazil - São Paulo Health Survey 2008-2009 Inquérito de Saúde no Município de São Paulo 2008 Survey: Cross-sectional - Household - Individual - Interview GHDx Entry last modified on: May 9, 2022
Albania Demographic and Health Survey 2008-2009 Survey: Cross-sectional - GPS coordinates (GIS) - Household - Individual - Interview - Nationally representative - Subnationally representative - Urban-rural representative GHDx Entry last modified on: Dec 14, 2023