The blue light filter is a type of Re-Charge Coating. It took some getting used to but I think it helps a bit with screen time, but to be completely honest, probably not a whole lot. I got the lens suggested by my optometrist because I thought I might as well try it since it was covered by my insurance, but I won't say it is the biggest help.

Sunglasses of the right tint can't also block the same light and on bad days I still use my super dark sunglasses. It would probably be most helpful for someone who works in an office job, particularly if they did not want to be wearing sunglasses at work.

Also, while I'm posting, my lens is called a dynamic 8 lens and the magnification in it is +0.8