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    Nanophotonics-based implant may enable at-home IOP monitoring

    Developers will begin preclinical research on the sensor with remote optical readout


    Take home:

    A nanophotonics-based device implanted in the eye may one day enable patients with glaucoma to monitor their IOP from home.


    A sensor the size of four strands of hair may be used one day to monitor IOP in patients with glaucoma.

    Three years ago, David Sretavan, MD, PhD, professor and vice chairman, Department of Ophthalmology and Physiology, University of California, San Francisco, heard about the possibility of making miniature nanophotonic sensors for IOP measurement from Hyuck Choo, PhD, now assistant professor of engineering, California Institute of Technology, Pasadena.

    “I was interested in this because of the pressing clinical need in glaucoma for a much better IOP sensor,” Dr. Sretavan said.

    Current IOP monitors could benefit from more accuracy, the researchers said.

    “Right now, the devices are indirect and make assumptions about the thickness and curvature of the eye,” Dr. Choo said.

    Additionally, IOP measurement usually takes place in the office only a few times a year.

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