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SAN FRANCISCO -- Physicians who see patients with osteoporosis should have a visual acuity chart on the office wall to check eyesight, Steven R. Cummings, M.D., advised at a meeting on osteoporosis that was sponsored by the University of California, San Francisco.
Reduced visual acuity greatly increases the risk for falling and for hip fractures. Usually poor vision is due to treatable risk factors such as the need for an updated glasses prescription, or cataracts, said Dr. Cummings, who is professor emeritus of epidemiology and biostatistics at the university and director of clinical research at the California Pacific Medical Center Research Institute.
Impaired vision can double or quadruple the risk for hip fracture. At least one study shows that repairing cataracts can reduce the risk of falling by 34% (Br. J. Ophthalmol. 2005;89:53-9).
Dr. Cummings noted that the following additional risk factors are worth addressing to prevent fractures:
* Vertebral fracture. Having a vertebral fracture--even a painless, asymptomatic one that's detected only by x-ray--increases the risk for future vertebral fracture two- to fourfold. Older women with a previous vertebral fracture have a 1%-3% annual rate of hip fracture, and randomized trials suggest that pharmacologic treatment can lower that risk.
* Nonspine fractures. Having any kind of nonspine fracture nearly doubles or triples the risk for having a future nonspine fracture. Even with normal bone density, having a nonspine fracture makes a future nonspine fracture more likely.
* Familial history. People who had a parent develop a hip fracture have double the risk for hip fracture themselves, compared with people whose parents did not have hip fractures. This is true regardless of bone mineral density. A wrist fracture in a parent increases an offspring's risk of wrist fracture. "There's some suggestion that this increased familial risk may be specific to the type of fracture," he said.