Canthal tilt
The tilt of your eye opening — whether the outer corner sits higher (upward/"positive" tilt) than the inner corner.
Why it matters
A positive canthal tilt reads as youthful, alert and attractive; a negative (downturned) tilt can make the face look tired.
What canthal tilt is
Canthal tilt is the angle of the line drawn from the inner corner of the eye to the outer corner. The inner corner is the medial canthus, near the nose; the outer corner is the lateral canthus, toward the temple. When the outer corner sits higher than the inner corner the tilt is positive, or upward; when the two corners are level the tilt is neutral; when the outer corner sits lower the tilt is negative, or downturned. The tool measures this angle on each eye, averages the two, and reports it in degrees above horizontal.
The slope you see is largely a product of the shape of the eye socket and the position of the lateral canthal tendon that anchors the outer lid. It is a real structural feature, not just a trick of expression, although expression and gaze can change how pronounced it looks in a given photo.
Why it shapes the expression of the eyes
A gently upward tilt tends to read as alert and awake, while a downturned outer corner can read as tired or downcast. These are associations the brain draws from everyday expressions, and they are part of why the feature draws so much attention in aesthetics discussions. Bashour & Geist 2007 examined the inclination of the eye opening in relation to attractiveness, and that study is the primary reference used here.
In the rated faces this tool was validated against, a higher upward tilt did track somewhat higher ratings, so the scored direction is supported rather than assumed. Even so, tilt is a single cue, the effect is modest, and a flat or slightly downturned tilt is an ordinary, common eye shape rather than a flaw.
Typical range, and how it differs by sex
The convention used here is a slight upward tilt of roughly +3 to +8 degrees, with the mesh average sitting near +5 degrees. The inclination is mildly dimorphic: Bashour & Geist 2007 describe values on the order of about 5 degrees in men and 6 degrees in women, so the tool applies gentle sex-specific bands of roughly +2 to +7 degrees for men and +4 to +9 degrees for women.
These differences are small and the exact norms vary, including by ancestry, since eye shape and features such as the epicanthic fold differ across populations. The numbers here are conventions drawn from surgical and anthropometric sources, not a universal standard, and a downturned or strongly upturned tilt says nothing about a person's worth.
Interpreting your number and what can change it
A few degrees either side of neutral is well within the normal range, and the reading is sensitive to how the photo was taken: camera height, head tilt and squinting all shift the apparent angle. A relaxed, front-on shot at eye level gives the most representative result.
Of the available levers, eyeliner and brow shaping can suggest a few degrees of lift at no cost and no risk. Brow or temple muscle-relaxant injections and thread lifts can produce a subtle, temporary lift of the outer eye area. At the structural end, lateral canthoplasty and canthopexy surgically reposition the outer corner and are permanent; these are described here only as factual options, not recommendations, and any surgical decision belongs with a qualified specialist.
Typical range
+3 to +8° (slight upward)
Angle from inner to outer eye corner. A slight positive (upward) tilt is commonly considered favourable; negative is a downward "sad" tilt.
What your reading means
- Typical
- Your eyes have an attractive upward (positive) tilt.
- Less common
- Your canthal tilt is mild — close to neutral.
- Distinctive
- Your eye tilt is flat or downturned relative to the preferred upward tilt.
How we measured it
We take the angle from each inner eye corner to the outer corner, average both eyes, and report it in degrees above horizontal.
The evidence
Sex-specific and validated: palpebral-fissure inclination is dimorphic (Bashour & Geist 2007; ~5° men, ~6° women) and in our rated faces a higher upward tilt tracked higher ratings.
References
- Bashour, M., & Geist, C. (2007). Is medial canthal tilt a powerful cue for facial attractiveness? Ophthalmic Plastic & Reconstructive Surgery, 23(1), 52-56. Note: the +4 to +8 degree range we use is a common surgical/anthropometric convention; verify exact norms in the primary texts.
- Farkas, L. G. (Ed.). (1994). Anthropometry of the Head and Face (2nd ed.). New York: Raven Press.