Question for my fellow prescription eye-glass wearers. Common sense and most ranges demand safety glasses with side shields be worn when shooting. I've used a variety of cheap safety glasses that they hand out at work over my prescription glasses but they always have a little distortion and when I'm already handicapped with less than perfect vision, that's something I don't need. Can anyone recommend a pair of optically pure ANSI Z87 safety/shooting glasses that will fit over a pair of precription glasses?