Juan, you probably need to experiment a little. Eyeglasses can affect how you position your head, and can make it more restrictive. My right eye is about 20/20, and it's my dominant eye, so I often shoot without glasses. My left eye needs some distance correction, so I sometimes leave the glasses on. With my right eye requiring almost no correction, the ocular adjustment does not change. With that said, safety has to be considered. In fact, our club requires eye protection, but I'm out there during the week and often alone, so it's a rule I sometimes break. But, I had a .45 pistol blow up on me a few years ago, and eyeglasses saved me from eye injury, so I greatly respect the risk. I never shoot any metallic cartridge firearm without eye protection. But, high pressure air can cause devastating injury too, so it should be considered. Something as seemingly benign as a piece of a breech O ring is not something you want in your eye.
