I am not trying to be argumentive and just my opinion. I think if it works do it. But, I think you are fooling yourself. "If" you focus on the sights, front sight primarily and can hold them in the ever almost impossible "perfect" alignment and have that ever escaping trigger control you will shoot better scores as long as you are somewhere in the aiming area you strive for.As that villain age catches up, it becomes increasingly more difficult to hold that gun steady.I have gone back to bullseye afer many years away and was humbled quite a bit. lol. Glasses that give you that nice crisp sight picture is a bonus, or eyes that still work.
I am 77 years old and know exactly of what yoo speaketh of!