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    A tearscope made of paper?

    Simple device tracks lipid layer by analyzing colors of interference patterns


    Tearscope results

    The results that researchers found provided some insights into tear film behavior.

    In healthy subjects, there were gray meshwork, wave, or amorphous patterns. In patients with dry eye, thin gray patterns were often observed. In MGD or GVHD patients, a range of red to violet colors appeared along with globus or clumping in severe cases.

    Taking photos of the lipid layer took less than 10 seconds, Dr. Hwang said.

    Researchers were able to easily save the image files. Video of dynamic tear film changes during blinking could be saved as movie files.

    Related dry eye: When old, new technologies converge for dry eye diagnosis


    1. Hwang HS, Kim EC, Kim MS. Novel tear interferometer made of paper for lipid layer evaluation. Cornea. 2014;33:826-831.



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