jay dee:  I am farsighted and only need reading glasses for short distances.  However, I now find gun sights have become fuzzy.  My solution has been to wear 2X reading glasses (with high impact plastic lenses) as shooting glasses.  This makes metallic sights and scope cross-hairs very clear.  The bulls-eye is a bit blurry but that is no problem.  You want the sights to be in sharp focus.