Most Attractive Eye Shape: What Research Says About Eyes and Beauty

Ophthalmological and aesthetic literature identifies six primary eye shapes based on the relationship between the upper and lower lids, the visibility of the eyelid crease, the position of the canthi (eye corners), and the amount of sclera (white) visible. The shapes are: almond, round, hooded, monolid, downturned, and upturned.

Almond eyes have a distinctive shape where the iris (coloured part) touches both the upper and lower lids, the inner and outer canthi are visible and defined, and the eyelid creates an elongated, symmetrically curved opening. Round eyes have a visible circle of sclera both above and below the iris, creating an open, wide-eyed appearance. Hooded eyes have significant upper lid skin that folds over and partially obscures the crease and lid.

Monolid eyes — characteristic in East Asian populations — lack a visible eyelid crease and have a single continuous surface from brow to lash line. Downturned eyes have outer canthi positioned lower than the inner canthi, creating a slightly drooping appearance. Upturned eyes — also called cat eyes — have outer canthi positioned higher than inner canthi, producing an almond variant with an upward lift at the outer corners.

Almond eyes appear at or near the top of attractiveness rankings in virtually every cross-cultural study that measures eye shape preference. The reasons involve three distinct mechanisms: proportion, balance, and the perception of emotion.

Proportionally, almond eyes correspond to the anthropometric ideal described by Farkas (1994): an eye width approximately 30% of the face width, with the opening height roughly one-third of the eye width — producing a ratio that reads as both large and well-proportioned without appearing bulging or strained. Round eyes can exceed this ratio; hooded eyes may fall below the visible opening threshold.

Emotionally, the almond shape has a structural advantage: the outer canthus elevation (upturned outer corner) creates a resting expression that reads as positive and slightly engaged. Research by Cunningham (1986) found that larger, more prominent eyes with visible lids were consistently rated as warmer and more attractive — and almond eyes meet both criteria simultaneously.

Canthal tilt — the angle between the inner and outer corners of the eye — is one of the most significant determinants of how eye shape reads in terms of attractiveness and gender perception. A positive canthal tilt (outer corner higher than inner) is associated with youth, alertness, and femininity in research. A neutral tilt is seen as balanced and strong. A negative tilt (outer corner lower than inner) is associated with tiredness and, when pronounced, perceived sadness.

Upturned eyes and well-defined almond eyes naturally carry positive or neutral canthal tilt. Downturned eyes carry negative tilt, which is consistently associated with lower attractiveness ratings and older perceived age — because negative tilt also develops naturally with age as the lateral orbital rim recedes and the outer eyelid loses support.

This is why canthal tilt modification — either through canthoplasty (surgical), filler placement at the lateral orbital rim, or the trending 'fox eye' makeup technique — has become one of the most-requested aesthetic changes in recent years. The preference for positive tilt is consistent across cultures and both genders.

Relative eye size — the ratio of eye opening to face size — is one of the most robust predictors of facial attractiveness in female faces. Larger relative eye size carries neotenic cues (baby-schema signals), which activate the brain's reward circuitry and produce positive evaluation responses. Perrett et al. (1994) found that enlarging eye size in computer-morphed faces consistently increased attractiveness ratings.

Round eyes maximise the open, visible area of the iris and sclera — which is why they produce a youthful, wide-eyed appearance. However, very large round eyes can lose some of the 'almond advantage' — the canthus definition and proportional elegance that makes almond eyes consistently preferred over simply large eyes.

For male faces, the relationship between eye size and attractiveness is more complex. Very large eyes in males can undermine the masculine, slightly hooded appearance that is also associated with male attractiveness. Hunter eyes — a term for deep-set eyes with prominent brow ridges — are rated as attractive specifically in masculine contexts despite (or because of) their smaller apparent openness.

Rate My Face uses MediaPipe's 478-point facial landmark model to compute the position of the medial and lateral canthi, the upper and lower lid margins, and the palpebral fissure geometry (the shape and size of the eye opening). From these, the algorithm derives the eye width-to-face-width ratio, the canthal tilt angle, and the eye opening height-to-width ratio.

The scoring is calibrated against the attractiveness research norms: almond proportions (width-to-opening ratio in the 2.5–3.0 range) score optimally; extreme deviations in either direction reduce the eye component score. Canthal tilt is scored such that positive tilt receives a neutral-to-positive contribution and negative tilt receives a mild penalty consistent with its association with perceived tiredness.

The AI measures what is visible in the photo — so eye makeup, eyelid puffiness, lighting, and even fatigue all affect the reading. For a baseline geometric measurement of your eye shape, a well-lit photo with a natural, relaxed expression and no heavy makeup around the eyes provides the cleanest input.