Review of recent surveys on blindness and visual impairment in Latin America


Limburg, H; von-Bischhoffshausen, FB; Gomez, P; Silva, JC; Foster, A; (2008) Review of recent surveys on blindness and visual impairment in Latin America. The British journal of ophthalmology, 92 (3). pp. 315-319. ISSN 0007-1161 DOI: https://doi.org/10.1136/bjo.2007.125906

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Abstract

Aims: To review recent data on prevalence and causes of blindness and visual impairment in Latin America. Method: Data from recent population-based prevalence surveys in nine countries in Latin America, covering 30 544 people aged 50 years and older, are presented. Results: The prevalence of bilateral blindness (VA <3/60 in the better eye with available correction) ranged from 1.3% in urban Buenos Aires, Argentina, to 4.0% in two rural districts of Peru; low vision from 5.9% in Buenos Aires to 12.5% in rural Guatemala. Cataract was the main cause of blindness (41-87%), followed by posterior segment disease (7-47%). Avoidable blindness ranged from 43% in urban Brazil to 94% in rural Guatemala. Conclusions: 43% to 88% of all blindness in Latin America is curable, being caused by cataract and refractive errors. Simple and cost-effective intervention strategies exist and need to be made available to more people. Also, the visual outcome from cataract surgery can be improved. In the urban areas with adequate eye care services, blindness and low vision due to posterior segment disease are increasing. Results from these surveys may help planners to estimate the prevalence and causes of blindness in their own area or country.

Item Type: Article
Keywords: Aged, Blindness, epidemiology, etiology, physiopathology, Cataract, complications, epidemiology, Cataract Extraction, Female, Health Surveys, Humans, Latin America, epidemiology, Male, Middle Aged, Prevalence, Sex Distribution, Treatment Outcome, Vision, Low, epidemiology, etiology, physiopathology, Visual Acuity
Faculty and Department: Faculty of Infectious and Tropical Diseases > Dept of Clinical Research
Research Centre: The International Centre for Evidence in Disability
International Centre for Eye Health
PubMed ID: 18211928
Web of Science ID: 253991800004
URI: http://researchonline.lshtm.ac.uk/id/eprint/7948

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