For diabetics, this news may bring tears of joy

Residents with diabetes may soon be able to use their tears — rather than have blood drawn up to10 times each day — when it's time to measure glucose levels.  University of Michigan researchers using an electrochemical sensor device found that glucose levels from the tears may suffice. Many people are reluctant to have their blood drawn, because of the resulting inconvenience and pain. Investigators said they hope to eliminate the need to have blood drawn in the future.