Brain 'Zaps' From Contact Lenses May Help Ease Depression, Mouse Study Shows

South Korean researchers tested smart contact lenses that send tiny patterned electrical signals through the retina.

In mice with depression-like symptoms, the eye-based stimulation appeared to improve behavior.

The study points to a new noninvasive neuromodulation approach for depression, published in Cell Reports Physical Science.

But the test was done in mice with impaired vision, and the method has not been shown to work in humans.

Major safety, manufacturing, and biological hurdles still stand before any real-world treatment.