The blue light negative effects seem to be in the early stages of being understood. There are many office and tech places and factories that use high k Lighting. Workers are around that for extended periods. And growers!
Bought my Method 7`s a couple of years ago. Think I paid $79.00 for 'em. Expensive for what they are ? Yes, but compared to what a new eye costs.......priceless. Oh, wait, no new eyes are available. So, protect the two ya got.