When you say a few meters how many is that?in my basement I have problly 30 feet is that good?
I guess the short answer is yes (30 feet is 9 meters). But what I would also add is that if you use your lasers without glasses a lot, after a while you start to feel quite comfortable with doing so. That is actually not a good thing, because it makes you more likely to pay less attention to what you are actually doing with the laser. So there's a bit of a slippery slope that I think one always needs to keep in mind.