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Rate of diabetic vision impairment down, study finds
Los Angeles Times

Nearly 3 in 10 Americans with diabetes over the age of 40 suffer from vision impairment caused by diabetic retinopathy, and about 4.4% have a form of the condition so severe it threatens their eyesight, researchers said Tuesday.

The overall figure is more than 10 percentage points lower than the proportion observed in earlier studies, but it is not clear whether the difference represents improvements brought about by better control of blood sugar levels or errors in the previous research, a team from the Centers for Disease Control and Prevention, the National Eye Institute and the University of Wisconsin reported in the Journal of the American Medical Assn.