Hi, former optician here, your glasses are probably fine quality wise but you should consider updating your Rx more often, at least every 2 years. Eyes change more than people tend to think they do, and since our lenses can be adjuated with muscles we often don’t notice when our vision begins to deteriorate.

I have a total correction of about -3d in each eye, but if I dont put my glasses on in the morning I don’t need them and can go through my day normally. As soon as I put them on and am hit with the strain relied though I’m unable to go back to not wearing them for the rest of the day.