Look Checker guide
Canthal tilt explained: eye-corner angle in a photo
Learn what positive, neutral, or negative canthal tilt means, how an eye angle calculator works, and why expression can change the reading.
What positive and negative canthal tilt mean
Canthal tilt describes the angle between the inner and outer corners of the eye. In a straight-on photo, an outer corner that appears higher is often described as positive tilt; a lower outer corner is described as negative; corners close to level are near neutral.
This free eye angle calculator estimates the average visible angle from facial landmarks. It is an image-based estimate, not an eye-health test or a measure of attractiveness.
Why the eye-corner estimate varies
Head tilt, squinting, smiling, eyeliner, partial eyelid coverage, and camera position can affect corner detection. Even a small shift in a landmark changes the angle, so a reading near zero should not be overinterpreted.
Get a clearer canthal tilt reading
Face the camera with both eyes visible, keep your head level, and use even lighting. If you compare photos, match camera height, distance, and expression.
There is no universally better eye-corner direction. Treat positive, neutral, or negative as a neutral description of the photo and explore makeup only if it suits your personal style.
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