Long story short, I can't focus on the front sight anymore without tilting my head so far back with my progressive lenses that I might shoot the sky. I will be 60 this year and all of a sudden my progressive lenses are not working for me. I went to the eye doctor and got a new pair of glasses and they are not working. I plan to re-contact the Dr. and try again maybe with bifocals. I am interested in what has worked for others.