It only blocks some small-ish percentage of the blue light. Really roughly, I could describe it as replacing flourescent bulbs with some warm LED bulbs on your entire vision. Just a very light warm tinge to everything.
I stopped noticing it about 20 minutes after putting the glasses with the filtering on. Now I don't know how I lived without it. If I take my glasses off and try and look at my computer screen I feel like I need to squint it's so harsh.
Or you can just filter out some of the light right in front of your eyes and achieve a workable solution today.
As an added bonus, I think you'll find it actually reduces your eye issues. Tried out the filtering basically because I couldn't think of a reason not to and the first time I put the new glasses on it felt like I'd stopped squinting and relaxed my eyes for the first time in years. I get way fewer eye-strain induced headaches now.
When I saw the blue-light filter option, I jumped at it because I knew I'd be spending most of my time wearing glasses looking at a computer screen anyway.
The blue filter they treat lenses with is very mild, though. It's maybe a 20% reduction. I now wear the glasses all the time even though I don't really need to, and the filter isn't noticeable at all.