TearLab Corporation is a diagnostics company that develops and markets lab-on-a-chip technologies that enable eye care practitioners to improve standard of care by objectively and quantitatively testing for disease markers in tears at the point-of-care. The TearLab Osmolarity Test, for diagnosing Dry Eye Disease, is the first assay developed for the award winning TearLab Osmolarity System. The TearLab Osmolarity System consists of the TearLab disposable, a single-use microfluidic microchip; the TearLab Pen, a hand-held device that interfaces with the TearLab disposable; and the TearLab Reader, a small desktop unit that allows for the docking of the TearLab Pen and provides a quantitative reading for the operator. The company sells its products through distributors in Europe, Asia, and North America.