:-)
My eyes are 65 years old, and they've gotten scuffed from time to time. When I see targets, they're fuzzy objects with dark centers. So when I shoot for the Bullseye matches, I'm shooting at the darkest area of the fuzzy blob above the sharply focused front sight. Same with arrows for me. Downrange there's some shapes and colors. One little spot is denser than other spots somehow, so there is my point of aim. Resonates with me somehow, shooting at the center.
CDFingers