Happiness is in the eye of the beholder: Koreans have created lenses that cure depression with electric shock

Pharmaceutical giants risk losing billions in profits due to an invention by researchers at Yonsei University in Seoul. Korean scientists have developed innovative soft contact lenses with embedded ultra-thin electrodes made of platinum and gallium oxide, which have been successfully tested on mice. The device works without any pills: it sends gentle electrical impulses through the retina to the brain, directly stimulating areas responsible for mood regulation. Just 30 minutes of wearing the device daily for three weeks reduced stress hormone levels in the rodents by 48% and increased serotonin levels by 47%. The effect was identical to that of the popular antidepressant Prozac, but without the liver damage and other side effects. If biotechnologists succeed in making the lenses wireless and bringing the technology to humans, then in the future, instead of a handful of pills, a person will simply need to insert the lenses and see the world with "happy" eyes.