Presbyopia, a condition characterized by age related difficulty in seeing objects nearby, may affect over 1 billion people. Presbyopia occurs naturally with age as the eye’s lens becomes more stiff and loses its elasticity and with that its ability to focus on close objects because of a decline in elasticity. Farsightedness results in the ability to see object far away, but not close up. Researchers at the University of New South Wales in Sydney, Australia analyzed multiple surveys to estimate the global prevalence of presbyopia.

Researchers in Sydney, Australia analyzed multiple surveys. Analysis showed that about 1 billion people I the world had presbyopia in the year 2005. About half of those people did not have glasses or glasses that were inadequate. Researchers are also predict that the amount of people with presbyopia is on the rise and may be as high as 1.8 billion people in the year 2050. Researchers suggest that interventions should be put into place to make spectacles more accessible.

Sources: Archives of Ophthalmology, 2008;126:1731-1739 Volume 168, Issue 22, Pages 2449-2458

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