I've had some eye issues over the last few years. First it was a retinal hemorrhage in my right eye and then cataracts. One day I was checking out an AR-15 that I had but had never shot before. Just out of curiosity I decided to look down the sights and found that with the peep sight I had a pretty good focus on the front sight. With that encouragement I went to a match in Lancaster County that had pumpkins and bowling pins set up on the backstop at 50 yards or so. I loaded up and found that offhand I could hit pumpkins and a bowling pin. It was good to know that at least at short range I could hit something with the iron sights considering the vision issues I had been having.