If it's a matter of aging eyes, next time you have an eye exam, ask the doctor for suggestions. In my case, my vision has tended more and more to farsightedness. Through trial and error (mostly error), I've found a relatively cheap pair of reading glasses (I'm using some mail order 0.5 diopter reading or computer glasses) gives me the clearest sight picture I've had in years, with relatively little blurring of the target. And, for rifle shooting, I like to have something between the hammer and my eyes. Since everybody's eyes are different (shooting conditions, too), that solution might not work for you, but it's an avenue to explore if you're a mind to. An eye doctor might suggest a solution that would help you. Good luck, SCL