Negative Canthal Tilt
Negative canthal tilt means the outer corner of the eye sits lower than the inner corner. The signed degrees are the result. The word is only the direction.
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What negative canthal tilt means
Draw a line from the inner corner, next to the nose, to the outer corner, toward the ear. If the outer end is lower in a front-facing photo, the angle is negative. Clinical photogrammetry has measured that inclination against a horizontal built from the facial midline, not against the edge of the picture.[1]
On this site the display band calls an average below −2° negative, and an average from −2° through +2° near level. A reading of −1.5° is still a negative direction. The band only stops a tiny error from flipping the label. It is not a diagnosis, and it is not the class system used in the Korean surgical series cited below.
See the geometry
-6.0°
negative
Outer eye corner sits lower than the inner corner.
Why a selfie can look more negative
Camera height, pitch, yaw, roll, and expression can change the apparent angle. The scanner rejects large pitch and yaw instead of inventing a correction. If the points land on a lash or a shadow, use Adjust eye corners.
Negative tilt and downturned eyes
The two phrases are related, and they are not the same measurement. Canthal tilt is the angle between the corners. “Downturned” is a looser description of the lid or the outer corner and can include shape that this angle does not capture. A negative degree value does not, by itself, describe the eyelid crease, the iris show, or the brow.
Near-zero results
−0.5° and −1° should not be treated as a finding. Landmark placement, focus, and a slight lean can move a result by that much. Read the signed number, then the quality mark. If it says the photo should be retaken, take another level photo before you keep the word.
Can negative canthal tilt be changed?
Makeup, brow styling, camera setup, and expression can change how a photo looks. They do not change the lateral canthal tendon. Exercises, massage, and mewing do not have reliable evidence for changing that geometry. Surgery such as canthoplasty or canthopexy is a separate medical decision.
Canthal tilt and looksmaxxing
Appearance forums and short videos discuss this angle as if it scored a face. The measurable part is the geometry. The leap from one angle to attractiveness, status, or intelligence is not supported by the photogrammetry literature.[1] Read that distinction separately.
Do I have negative canthal tilt?
Measure a front-facing photo on this page. Negative direction means the outer corner is lower than the inner corner. A result such as −1.5° is still a negative direction even when the display band says near level.
Is negative canthal tilt bad?
No. It is a geometric description of two points on a photograph. It is not a judgment of health, personality, intelligence, or worth.
Does canthal tilt say anything about IQ or personality?
No. There is no reliable basis for treating an eye-corner angle as an IQ test or a personality test. The clinical photogrammetry we cite uses the angle to describe eye position, not cognition.
Can a photo make the tilt look more negative?
Yes. Camera height, pitch, yaw, roll, and expression can change the apparent angle. A rejected pose is more useful than a precise number from a bad photo.
Sources
- Lee JY, Choung HW, Choung PH. Diagnostic analysis of vertical orbital dystopia and canthal tilt for surgical correction. J Korean Assoc Oral Maxillofac Surg. 2020;46(6):379-384. PubMed.
- Google. Face landmark detection guide. MediaPipe Solutions. Face landmark detection guide.