The TearLab takes a sample from each eye and measures the osmolarity of your tears. If your tears have a high osmolarity, or salt content, it means that they are not properly lubricating your eyes. As the osmolarity in your tears increases the more they damage your ocular surface.

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Safeguarding Your Child's Eyesight
Just like adults, children need to have their eyes examined. This need begins at birth and continues through adulthood.
Following are common recommendations for when a child needs to be screened, and what is looked for at each stage.
A child’s...