If you want to not ruin your vision what you do is using it for more than staring at a flat, fixed distance surface, and, most importantly, going outside.
If you want to have an edge in gaming by having better vision, what you do is going to the doctor.
Although these were hip back in 2007 because some douchey CS players wore them to lans, they never got big because it's fucking stupid.
"A Pacific University research study of 36 participants did in fact find significant differences in irritation or burning of the eyes, tearing, or watery eyes, dry eyes, and tired eyes, that were each improved by Gunnar lenses versus placebo lenses, however there was no significant difference in glare reduction or contrast improvement versus the placebo lenses. The study also never tested the alternative method of simulating the effect of Gunnar lenses by simply adjusting the computer monitor's parameters such as brightness, contrast and color temperature."
If your vision is getting bad from playing video games, then go the fuck outside and look at a fucking tree or a fucking house or a fucking car.... or all of those fucking things.
Go out, take a 5-10 minute walk, and look at things. Things at a different distance than your monitor.
forget this eyewear shit.
i got lasered eyes and my aim went up 10 perc.
just ask your doc and he will calibrate the laser for quake-action (only possible with new xen-300 laser units).
I went to china recently and through my dads contacts got glasses custom ordered straight out of the factory, with high quality frame, yellow whatever the fuck that prevents you from getting cancer from computer waves and whatnot which gunnar advertises.
Final cost: ~$85
TLDR: Whoever buys that stuff: enjoy getting fleeced you stupid sheep.