Retinopathy of prematurity: A global perspective of the epidemics, population of babies at risk and implications for control

Abstract: Globally at least 50,000 children are blind from retinopathy of prematurity (ROP) which is now a significant cause of blindness in many middle income countries in Latin American and Eastern Europe. Retinopathy of prematurity is also being reported from the emerging economies of India and China. The characteristics of babies developing severe disease varies,…

Global prevalence of age-related macular degeneration and disease burden projection for 2020 and 2040: a systematic review and meta-analysis

Abstract: Numerous population-based studies of age-related macular degeneration have been reported around the world, with the results of some studies suggesting racial or ethnic differences in disease prevalence. Integrating these resources to provide summarised data to establish worldwide prevalence and to project the number of people with age-related macular degeneration from 2020 to 2040 would…

The number of people with glaucoma worldwide in 2010 and 2020

Aim: To estimate the number of people with open angle (OAG) and angle closure glaucoma (ACG) in 2010 and 2020. Methods: A review of published data with use of prevalence models. Data from population based studies of age specific prevalence of OAG and ACG that satisfied standard definitions were used to construct prevalence models for…

A Global Survey of Low Vision Service Provision

Purpose: To conduct a global survey of low vision services to describe the needs, priorities, and barriers in provision and coverage. Methods: Data were mainly derived from a survey and from some secondary sources. The survey was distributed to Vision 2020 contacts, government, and non-government organizations (NGOs) in 195 countries during 2006–2008. Themes in the…

Progress report on elimination of Trachoma, 2013

2013 progress report on the elimination of Trachoma by the WHO Alliance for the Global Elimination of Blinding Trachoma by the year 2020 (GET2020). The number of people living in trachoma-endemic districts was estimated to have reduced from 314 million in 2011 to 229 million in 2013, according to the World Health Organization. The 2014…

Global vision impairment due to uncorrected presbyopia

Objectives: To evaluate the personal and community burdens of uncorrected presbyopia. Methods: We used multiple population-based surveys to estimate the global presbyopia prevalence, the spectacle coverage rate for presbyopia, and the community perception of vision impairment caused by uncorrected presbyopia. For planning purposes, the data were extrapolated for the future using population projections extracted from…

Global magnitude of visual impairment caused by uncorrected refractive errors in 2004

Estimates of the prevalence of visual impairment caused by uncorrected refractive errors in 2004 have been determined at regional and global levels for people aged 5 years and over from recent published and unpublished surveys. The estimates were based on the prevalence of visual acuity of less than 6/18 in the better eye with the currently available…

Causes of vision loss worldwide, 1990–2010: a systematic analysis

Data on causes of vision impairment and blindness are important for development of public health policies, but comprehensive analysis of change in prevalence over time is lacking. This paper provides a systematic analysis of published and unpublished data on the causes of blindness (visual acuity in the better eye less than 3/60) and moderate and severe…