Changing patterns in global blindness: 1988â2008 - CiteSeerX
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Changing patterns in global blindness: 1988â2008 - CiteSeerX
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Community Eye Health
20
TH ANNIVERSARY EDITION
Journal
VOLuME 21 | iSSuE 67 | SEPTEMBER 2008
Changing patterns in global blindness: 1988 –2008 MM Farrahmand. AFGHANISTAN
Allen Foster Professor, International Centre for Eye Health, London School of Hygiene and Tropical Medicine, Keppel Street, London WC1E 7HT, UK. Clare Gilbert Professor, International Centre for Eye Health; Medical Advisor, Sightsavers International, UK. Gordon Johnson Honorary Professor, International Centre for Eye Health; Emeritus Professor of Preventive Ophthalmology, Institute of Ophthalmology, University College London, UK.
Prevalence of visual impairment Changing demography When the Community Eye Health Journal was launched in 1988, the world population was approximately 5.1 billion. Over the last 20 years, it has increased by approximately 30%, reaching 6.7 billion in 2008. During the same period, the world population has also become proportionally older, as the number of people aged 65 years and over has increased by approximately 55%, from 320 million in 1988 to 500 million in 2008. Since the prevalence of visual impairment becomes higher as people age, this combination of an increasing population and an ageing population is expected to cause a significant increase in the total number of blind people.1 Estimates of the number of people with visual impairment worldwide In 1988, the number of people who were blind (visual acuity (VA)
