It helps me with the eye strain. Also I am starting to find myself returning to good ole paperback books for reading. Try printing out some code bases when ever you start getting more advanced you can actually learn a lot from studying code.
I'm generally OK with spec swapping, but I'm tempted to replace my primary glasses with bifocal/trifocal/progressives which in theory should end the swapping. I'm just not so sure I'd like tilting my head in order to change focus. :-/
IIRC, computer glasses have a yellowish-amber tint to them, and possibly some coatings.
Like you, I got single vision glasses for computer use, but they don't have the tinting/coatings that computer glasses do.
I run a pair of 4K 27" monitors at 100% scaling (people who see my setup think I'm crazy), but I had my optometrist get me set up for a reading distance of 21" to 27" -- the closest and furthest points of my monitors -- for my glasses. My single vision prescription includes distance + adjustment for presbyopia, so it's great.
You measure your working distance at your desk, take the number with you to the optometrist, and they'll dial-in a prescription that works best for that distance.
Anti-glare coating helps too.