Lab on a Contact Lens Can Measure Stress Through Serotonin

spectrum.ieee.org · 2026-09-26 · by Long Nguyen ·generic
A future smart contact lens could monitor stress levels by measuring small concentrations of serotonin in tears, revealing mental health data insights.

Lab on a Contact Lens Can Measure Stress Through Serotonin

BiomedicalNews

Lab on a Contact Lens Can Measure Stress Through Serotonin

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Smart contact lenses might one day measure body chemistry throughout the day

Charles Q. Choi

24 Sep 2026

4 min read

Charles Q. Choi is a contributing editor for IEEE Spectrum.

3D rendering of a contact lens equipped with a squiggly electrochemical sensor along the outer edge of the iris.

In the future, a contact lens printed with winding electronics could act as a wearable sensor for measuring biochemical signals like serotonin levels.

Minwoo Kim, Sang Won Lee, et al.

spectrum.ieee.org · 1 images · 92 links

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