I just quickly looked at readers.com and they do have some for blue lights
http://www.readers.com/computer-reading-glasses.html

Will take a better look at their site tonight. I do have a pair for reading (regular books or truly fine prints stuff) as I don't need real reading glasses for now. Opto said not to spend a fortune for reading glasses (drugtstore type can do for time-being as I'm only at 1+). And even those, they seem to triple the size of letters for me and I hate this. But I may decide to get a pair from them to try. And you have various coupons/code you can use to save 20% or 40% off. May worth the try.