[kazinator]

In Japan, you can order "PC Lenses" for your glasses at outlets such as Jins. These supposedly filter out that blue light (PC is from Personal Computer: staring at the screen).

Link:

http://www.jins-jp.com/jins-pc/

If I search in English, most of the search results are spammy companies selling what look like sunglasses for computer use (e.g. google "compuer glasses"). These are obviously tinted. But these Jins "PC Megane" do not look tinted, or only faintly so. Jins will put these lenses in any frame.

I wanted these the last time, but for my astigmatism it would have required a 1 week order, and I was flying out of Japan sooner than that.