Brain-stimulating glasses to fight dementia, Japanese companies say

OSAKA -- A Japanese drugmaker has teamed with a startup to develop a wearable device like eyeglasses that the companies hope to use to treat dementia symptoms.

Light-emitting diodes in the frame will shine violet light -- which lies at the high end of the visible spectrum -- into the wearer's eyes for several hours a day, stimulating parts of the brain including the frontal lobe and hippocampus.