I don't know where else to post this question. I wear tri-focal glasses. When I shoot, I get the best sight picture through the middle portion of the tri-focal. When I get the best sight picture, the target, 15 yds and more, is somewhat fuzzy. It's not so bad I cannot see it, but not to my liking. If I use the top portion of my tri-focals and try to get a clear picture of the target, my sights are too fuzzy. Question: Is there a type of after market sights that my help address the problem I'm having? What I'd rather do, is have a clear picture of my target, and have sights that can be seen easy enough to get a clear sight picture. Any advice will be appreciated.