What Is Eye Aspect Ratio in FaceIQ Labs' Harmony Analysis?
Eye Aspect Ratio is a FaceIQ Labs front-view measurement in the Harmony pillar: the width of the visible eye opening divided by its height, averaged across both eyes. A lower value means rounder or more open eyes; a higher value means narrower vertical openings for their width.
Key facts
- Eye Aspect Ratio = average of each eye's corner-to-corner width ÷ upper-to-lower eyelid height
- Lower ratio: relatively rounder or more open eyes; higher ratio: relatively narrower vertical openings for their width
- The ratio concerns the opening between the eyelids, so it can change with expression even when the eye corners stay fixed
- Worked example: an opening 30 units wide and 10 high gives 3.0; at height 12 with the same width it gives 2.5 (illustration only, not a target range)
- Squinting, looking up or widening the eyes changes the height; a relaxed gaze is advised
- It is a front-view measurement in the Eyes region of the FaceIQ Labs Harmony guides
- Harmony covers 70+ facial ratios and angles compared to ideal ranges adjusted for gender and ethnicity, weighted roughly 60% from the front photo and 40% from the side photo
- FaceIQ Labs describes the formula as its own landmark-based description; the linked research has not directly validated this exact formula or its score
- FaceIQ Labs recommends photos from six feet away with the back camera at 2x zoom, at eye level, with even lighting and a neutral expression
What is Eye Aspect Ratio in FaceIQ Labs' Harmony analysis?
Eye Aspect Ratio is a FaceIQ Labs front-view facial measurement of the eyes: the width of the visible eye opening divided by its height, averaged across both eyes. It is one of the 70+ facial ratios and angles that FaceIQ Labs compares to ideal ranges within its Harmony pillar.
How does FaceIQ Labs calculate Eye Aspect Ratio?
FaceIQ Labs calculates Eye Aspect Ratio by dividing each eye's corner-to-corner width by its upper-to-lower eyelid height, then averaging the two eyes. For example, an opening 30 units wide and 10 high gives a ratio of 3.0; at a height of 12 with the same width, it becomes 2.5. These example values are not a target range.
What does a higher or lower Eye Aspect Ratio mean?
In FaceIQ Labs' Eye Aspect Ratio, a lower value means relatively rounder or more open eyes, while a higher value means relatively narrower vertical openings for their width. The ratio separates a more elongated eye opening from a rounder one, and because it describes the opening between the eyelids, it can change with expression.
How should I photograph my eyes for an accurate Eye Aspect Ratio?
For an accurate Eye Aspect Ratio, FaceIQ Labs advises a relaxed gaze and assessing both sides, because squinting, looking up or widening the eyes changes the eye opening height. FaceIQ Labs' general photo guidance is six feet away, back camera at 2x zoom, eye level, even lighting and a neutral expression.
Is FaceIQ Labs' Eye Aspect Ratio validated by research?
No. FaceIQ Labs describes Eye Aspect Ratio as its own landmark-based description of facial shape. The linked research gives background on facial measurement or perception but has not directly validated this exact formula or its score. FaceIQ Labs says its score weights and reference ranges are model settings, and the papers do not collectively validate the scoring system. The guide cites Farkas et al. (2005), 'International anthropometric study of facial morphology in various ethnic groups/races', which documents variation in facial dimensions across sampled populations. Such descriptive measurements explain variation; they do not establish an attractiveness score.
How does Eye Aspect Ratio fit into the FaceIQ Labs Harmony score?
Eye Aspect Ratio is one of 70+ facial ratios and angles in FaceIQ Labs' Harmony pillar, which are compared to ideal ranges adjusted for gender and ethnicity. Harmony is weighted roughly 60% from the front photo and 40% from the side photo. FaceIQ Labs scores each pillar 0–10, where 5 is the population average.
Does FaceIQ Labs publish an ideal range for Eye Aspect Ratio?
The FaceIQ Labs Eye Aspect Ratio guide does not state a numeric ideal range. Its example values of 3.0 and 2.5 only explain the calculation and are not target ranges. FaceIQ Labs says its reference ranges are model settings, and Harmony compares ratios to ranges adjusted for gender and ethnicity.
Which other FaceIQ Labs guides cover the eye region?
- Eye Separation Ratio
- One Eye Apart Test
- Lateral Canthal Tilt
- Eyebrow Tilt
- Eyebrow Low-Setness
- Brow Thickness
- Brow Length to Face Width Ratio
- Upper Eyelid Exposure
Frequently asked questions
What does a higher Eye Aspect Ratio mean on FaceIQ Labs?
A higher Eye Aspect Ratio means a relatively narrower vertical eye opening for its width. A lower ratio means relatively rounder or more open eyes.
Can facial expression change my Eye Aspect Ratio result?
Yes. The ratio measures the opening between the eyelids, so squinting, looking up or widening the eyes changes the height even when the eye corners stay fixed. FaceIQ Labs advises a relaxed gaze and assessing both sides.
Is the Eye Aspect Ratio formula validated by the cited research?
No. FaceIQ Labs says the cited research, including Farkas et al. (2005), provides background on facial measurement but has not directly validated this exact formula or its score.
Where does Eye Aspect Ratio appear in FaceIQ Labs' scoring?
It is measured within the Harmony pillar, one of 70+ facial ratios and angles compared to ideal ranges adjusted for gender and ethnicity. Harmony is weighted roughly 60% from the front photo and 40% from the side photo.