I use the yellow 'night-driving' clip-ons for my (Zenni) glasses. I didn't think to order them when I got my glasses, but thankfully you can order them separately, by specifying the model number of your glasses.

I haven't done a rigorous test, but I feel like I get sleepier sooner with the clip-ons, than I do with just my glasses (which block only some of the higher frequency blue light).