A New Contact Lens Treats Depression by Stimulating the Retina, Scientists Report

Innovative Contact Lens Developed for Mental Health

According to НВ — Техно: On June 9, researchers revealed a groundbreaking contact lens embedded with electrodes that can influence a person's mental state via the retina. The technology was tested on mice with artificially induced depression symptoms. The study observed significant changes in the animals' behavior and biochemical markers, though the development remains far from clinical application.

Technical Specifications of the Lens

The lens features zigzag-shaped electrodes made of gallium oxide and platinum, designed for flexibility. It is coated with platinum nanoclusters and maintains over 80% transparency. The device emits two high-frequency signals into the eye, and where these signals intersect, a 20-hertz wave is generated. For the mice, sessions lasted 30 minutes daily.

• Mouse mobility increased by 76%
• Corticosterone levels dropped by 48%
• Serotonin levels rose by 47%

This effect is comparable to the antidepressant fluoxetine. The treatment also restored theta wave synchronization between the hippocampus and prefrontal cortex, and recovered half of the lost dendritic spine density. However, researcher Chang-Un Park noted that the technology still requires refinement, as mouse models of the disease do not fully replicate human disorders. Engineers need to make the lenses wireless and adapt them to the movements of the human eyeball.

'Since the eye is anatomically part of the brain, we wondered if a simple contact lens could serve as a soft, non-invasive gateway to the brain circuits that control mood,' said Chang-Un Park.

He added: 'Imagine two flashlights: each beam alone is dim, but where they cross, a bright spot appears-and that bright spot can be created far from the flashlights themselves. Our contact lens does the same with two harmless electrical signals.'

'Our work opens entirely new frontiers in treating brain disorders through the eye,' the researcher concluded. This breakthrough could mark a significant step toward novel treatments for mental health conditions, but technical and clinical hurdles remain before it can be commercially used.

This innovation holds the potential to transform approaches to treating mental disorders, particularly depression, by non-invasively targeting brain mechanisms through the retina. However, given the need for further research and improvements, it is important to track the development of this technology to understand its real-world medical applications and potential benefits for patients.

As researchers explore innovative ways to improve mental health, the development of this contact lens raises intriguing questions about the brain's adaptability. In a related study, scientists have uncovered methods to retrain the brain to alter habits, suggesting that understanding neural pathways could be key in treating conditions like depression more effectively. This connection highlights the potential for interdisciplinary approaches in advancing mental health treatments.