If I use my distance glasses to try and shoot open sights, I always see the target clearly but two front sights. In other words, if they correct so that your distance vision is clear, they can't make the near vision clear. Not sure what your solution is, but I end up sighting over the top of my glasses. I have to settle for a blurry target and clear front sight. Your rear sight will always be blurry no matter what, but you have to figure out a way to get that front sight clear.