Yep , I know the feeling. I used to see open sights perfectly.Now I have the same problem blurry.I use a scope now mainly for that reason.If I use my reading glasses ,then I have a hard times seeing the target.It's a no win situation.I can still see distances like a young man.I guess we just have to make the best of it. Maybe there is a solution to this that an eye doctor could enlighten us with. Until then Hello Leupold.
Ruger Redhawk

..... A Proud NRA Life Member since 1977 .....Ruger Redhawk