Researchers Explore A Drug-Free Idea To Relieve Chronic Pain: Green Light

At OHSU, her team is looking at photosensitivity in veterans with chronic pain, some of whom have a traumatic brain injury, and using functional MRI to see how they process light compared with those without chronic pain. She says it's possible that photosensitivity could be a predictor of chronic pain.
Heinricher says her team happened upon this area of research accidentally when they noticed certain cells that facilitate pain responded to a flashlight in a dark lab.
"I was quite surprised," she says. "If you had asked me this five years ago, I would have said no way."

https://www.npr.org/sections/health-shots/2019/12/15/787138928/researchers-explore-a-drug-free-idea-to-relieve-chronic-pain-green-light?fbclid=IwAR0M9JYsjWIyJXeIHOmZrZV62c0pwoZNV01Xr5IQfprMeh5TyG7LdyiHgcE

Hope this works out. I like that they are trying green contacts too.