Just a recommedation if you do get safety glasses or other glasses with inexpensive plastic lenses. Use a 100% cotton cloth to clean them and the lenses will remain pristine and unscratched for a very long time. The glasses will fall apart first. Use a paper towel and they'll be scratched up and unusable in 2 weeks. Synthetic micro-fiber cloths might work too, but I have to many old cotton rags to ever need to buy them.
But hey, they are cheap. You can buy safety glasses by the gross and toss them away as often as you want.