If it's worth anything, I'm an eye doctor. I'd suggest you get your eyes checked and see if you need even small amounts of correction for astigmatism. That can make a big difference in how you see. PLUS those lenses are set at an "average" distance apart and your eyes may be further apart or narrower and that can induce "problems".
Get them checked and simply ask the Dr. if you can use those glasses comfortably. Make it a point to ask him/her BEFORE the exam so they don't feel "backstabbed" (or 'used') by the question after the exam, if you know what I mean.

Most likely they are OK, but you are much better off making sure. Plus the fact of getting your eye HEALTH checked is worth the piece of mind.

Thats..............Dr. BigBadWulff to you!