How Your Eyes Decide What "On Line" Looks Like
Dominance, parallax, and posture don't move the golf ball on their own — they shape what you perceive as square, and perception is what your setup is actually built around. Here's what the terms mean once you're watching your own overhead photo on the bay screen.
Not a Preference, a Wiring Fact
Roughly two-thirds of people are right-eye dominant, and most of the rest are left-eye dominant — a small share show mixed or central dominance. Dominance isn't related to handedness; plenty of right-handed golfers are left-eye dominant, and that mismatch is exactly the group most likely to misread a square clubface as slightly open or closed.
A simple triangle test during your session identifies which eye leads. From there we can predict, before you ever pick up a putter, roughly which direction your natural aim bias is likely to run.
The Optical Shift You Don't Notice, But Feel
Eyes Inside the Line
Positioning your eyes even slightly inside the target line at address can make a square face look closed, pulling your aim right without you ever touching the club.
Eyes Outside the Line
The opposite shift makes a square face look open, biasing your natural aim left of where the face is actually pointed.
Eyes Directly Over the Ball
The reference posture most alignment aids are designed around — when your eye-line matches this, the sightline reads exactly as intended.
Why One Marking Style Doesn't Fit Every Golfer
A single centered line asks your brain to bisect it symmetrically, which favors a golfer whose eyes sit close to directly over the ball. A triple-track design gives the eye a wider reference band, which can help a golfer whose eye-line runs slightly off-center find the same read more consistently. Neither style is objectively better — the right one depends on your own dominant-eye position.
We test two or three styles against your measured setup during every fitting, comparing your read consistency across attempts rather than defaulting to whatever a putter happened to ship with.
Find Your Own Eye-Line Reading
We test dominance, parallax, and sightline style against your own setup data during every session.