[zoomablemind]

> ...simple brief exposures to light wavelengths that recharge the energy system that has declined in the retina cells, rather like re-charging a battery.

If retina cells' energy absorbing properties are so selective, then how such treatment is different from daily exposure to ambient or dusktime sunlight? Or this 'recharging' stops in presence of 'wrong' wavelengths in the spectrum?

[bdjfkrkrk]

I think it's about intensity. It's well known that powerful light in the morning from the sun is good for you. But it needs to be above a certain intensity.

[dorkwood]

I currently have the morning sun blasting through my window every morning, and it feels like it's having the opposite effect: reduced sleep quality and a foggier brain.

[cutemonster]

I've tried to avoid strong sunshine -- UV safe glasses for example.

Now I'm wondering if 5 minutes without sunglasses could be good?

Any link to where you've read about this? Or search words?