Not OP, but I've bought a dozen different blue light blocking glasses, including the fancy $100 ones from Gunnar Optiks. Gunnar had good performance, but no better than the $12 cheapo pair I got off Amazon (no doubt from a reseller of generic Chinese wares). Save yourself the money and go with a cheap pair to see if you like it. You can always invest more later if you find it to be worthwhile, but in this case price did not yield any appreciable difference to me.

You can use an app to do this as well. f.lux was the first app in this category I think and is still a great choice. I run it on a Macbook. There are similar apps for phones as well. Some phones now include built-in functionality to do this as well.

My optometrist added the blocking into my standard glasses. I know not everyone wears glasses, but for those who do, just pay the extra charge to have it included in your lenses.