Aim & Alignment

DOMINANT
EYE
TEST

One of your eyes is the one your brain aims with — it anchors where things are, while the other supports. Knowing yours matters for photography, archery, shooting, darts, even golf putting. This is the classic Miles triangle test, guided step by step. Takes one minute, no equipment.

What you'll do

1
Make a small triangle with your hands
Arms fully extended, thumbs and index fingers overlapped.
2
Frame a distant object through it
A doorknob, a light switch — something 3+ meters away. Both eyes open.
3
Close one eye, then the other
Whichever eye keeps the object framed is your dominant eye.
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Step 1 of 3
FRAME THE TARGET

Extend both arms. Overlap your hands to make a small triangle between thumbs and index fingers. With both eyes open, center a distant object inside the triangle — pick something small, 3 or more meters away. Keep your arms exactly where they are for the next two steps.

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Step 2 of 3
CLOSE YOUR LEFT EYE

Keep your arms still. Close (or cover) your left eye, looking with your right eye only. Is the object still centered in the triangle — or did it jump out of frame?

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Step 3 of 3
NOW YOUR RIGHT EYE

Re-center the object with both eyes open if you need to. Now close (or cover) your right eye, looking with your left eye only. Still centered, or did it jump?

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Result

YOUR
DOMINANT
EYE

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Note
Eye dominance is normal — everyone has it, like handedness — and it says nothing about eye health or vision quality. The Miles test measures sighting dominance, which can occasionally differ from other forms of dominance and can vary with gaze direction in some people. If your result was unclear, retry with a smaller triangle and a more distant target.