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One out of 90 people or nearly 108 million people all over the world are estimated to be suffering from correctable vision impairment, a global study says.
The causes of blindness and moderate to severe vision impairment in nearly 101 million people are uncorrected refractive error (URE) - nearsightedness, farsightedness, and other focusing problems.The study s findings were published in Optometry and Vision Science, the official journal of the American Academy of Optometry.
Kovin Naidoo one of the researchers from Brien Holden Vision Institute, Durban, South Africa, says, Uncorrected refractive error continues as the leading cause of vision impairment and the second leading cause of blindness worldwide. Refractive error is a range of common vision problems that cause decreased sharpness of vision, including myopia (nearsightedness), hyperopia, (farsightedness), or astigmatism.
While normally eyeglasses or contact lenses are routinely prescribed to correct these causes of impaired vision, millions of people around the world still have impaired vision or even blindness caused by URE. Ophthalmologists and optometrists collected data from nearly 250 studies performed between 1990 and 2010 and that was analysed to estimate the number of people affected by blindness and visual impairment due to URE, along with trends in prevalence and differences by region.
Uncorrected refractive error was found to be the leading cause of visual impairment, affecting an estimated 101.2 million people. After cataracts, it was the second leading cause of blindness as it affects another 6.8 million people globally. In 2010, URE contributed 20.9 % of all blindness and 52.9 % of all moderate to severe vision impairment, Naidoo added. Here's why you should visit an eye doctor regularly.
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