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Bad vision linked to shorter lifespan
The study, published in the Archives of Ophthalmology, also linked non-correctable vision problems with increased risk of death among those between the ages of 49 and 74.
Visual impairment has been associated with a higher risk of death as well as factors that may lead to increased death such as unintentional injury, depression, lower body weight, reduced walking speeds, increased risk of falls, self-reported difficulty in physical activity, cardiovascular disease, dementia and cancer.
"Correction for these 'confounders' has been found to attenuate the association between visual impairment and mortality, but the mechanisms behind the association between visual impairment and mortality remain to be determined." study leader Michael Karpa of Westmead Millennium Institute in Sydney said in a statement.
Karpa and colleagues used data from the Blue Mountains Eye Study, which examined visual impairment in 3,654 participants age 49 and older between 1992 and 1994 and after five and 10 years.
Thirteen years after baseline, 1,273 participants had died. A higher risk of dying was associated with non-correctable visual impairment, with a stronger association for participants younger than age 75.
Copyright 2009 by United Press International
This news arrived on: 10/20/2009
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