Canthal Tilt Test
Measure the precise inclination angle (in degrees) of your palpebral fissure between the medial and lateral eye canthi.
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What Is Canthal Tilt?
Canthal tilt describes the angle of the line connecting the inner corner of the eye (medial canthus) to the outer corner of the eye (lateral canthus). In ophthalmology and anthropometry, this angle is known as the palpebral fissure inclination. To evaluate overall ocular morphology, visit our Eye Shape Test.
Positive Canthal Tilt (+2° to +8°)
The lateral canthus (outer corner) rests visibly higher than the medial canthus (inner corner). Frequently associated with an alert, uplifted eye shape.
Neutral Canthal Tilt (-1.5° to +1.5°)
The inner and outer corners sit almost horizontally parallel to the inter-pupillary baseline.
Negative Canthal Tilt (-2° to -7°)
The outer corner sits lower than the medial corner, creating a classic downturned or gentle aesthetic.
Rotation Compensation (Scientific Precision)
FaceMora's engine automatically calculates the roll angle of your head using both inner canthi landmarks and un-rotates the coordinate space before measuring the tilt. This prevents accidental false positive or negative readings caused by tilting your head slightly in a selfie.