Stimulating Contact Lenses Match Prozac in Depression Study
Neuroscience News • • health
Key Points:
- Materials scientists have developed wearable, drug-free contact lenses that treat depression by delivering mild electrical signals through the retina, effectively stimulating mood-related brain regions non-invasively.
- In mice, these lenses demonstrated antidepressant effects comparable to fluoxetine (Prozac), improving behavioral, neural, and physiological markers of depression after three weeks of daily 30-minute sessions.
- The technology uses temporal interference, where two electrical signals intersect precisely at the retina to target deep brain areas without affecting the eye’s surface, restoring connectivity between the hippocampus and prefrontal cortex.
- Biological changes observed included a 47% increase in serotonin, a 48% reduction in blood corticosterone (stress marker), and decreased brain inflammation, indicating a comprehensive therapeutic effect.
- Researchers plan to develop wireless versions, test long-term safety in larger animals, and personalize stimulation before clinical trials, aiming to offer a transformative, non-invasive treatment for depression and other brain disorders.