Understanding Crease Height and Depth
The appearance of a double eyelid crease is determined primarily by two measurements: its height above the lash line and the depth of the fold. A crease positioned closer to the lashes, typically around 6 to 7 millimetres, produces a subtle, understated result that many patients describe as natural. A crease set higher, at 8 to 10 millimetres, creates a broader visible lid platform and a more defined appearance.
Crease depth refers to how deeply the fold is set into the eyelid. A shallow crease gently catches the light and looks soft when the eye is open. A deeper crease creates a more pronounced shadow line. The surgeon controls depth through the amount of tissue removed and the strength of the adhesion created between the skin and the underlying structures.
In-Fold vs Out-Fold
The in-fold and out-fold are the two main crease configurations. In an in-fold crease, the fold begins at or near the inner corner of the eye and tapers inward, with the crease line partially hidden by the epicanthal fold. This produces a softer, more tapered appearance that is common in many East Asian eyelids that naturally have a crease.
An out-fold crease runs parallel to or above the lash line from the inner to the outer corner, remaining visible across the entire eyelid. This configuration shows more of the upper lid skin above the lashes and creates a more open, defined look. The out-fold is sometimes described as a Western-style crease, though many Asian patients naturally have this pattern as well.
Some patients may also suit a semi-out-fold, which blends characteristics of both patterns, tapering slightly at the inner corner while remaining visible across most of the lid.
How Facial Anatomy Guides the Choice
The best crease style for any individual depends on several anatomical factors that the surgeon assesses during consultation. Brow position matters because a lower brow naturally pushes more skin onto the upper lid, which can make a high crease appear heavy or unnatural. Patients with a higher brow position often have more flexibility in crease height.
The presence or absence of an epicanthal fold, the small web of skin at the inner corner of the eye, also influences the decision. A prominent epicanthal fold may partially conceal an in-fold crease and can sometimes be addressed with epicanthoplasty if a full out-fold is desired.
Orbital fat volume, eyelid skin thickness, and the distance between the brow and the lash line all factor into the recommendation. A crease that looks elegant on one patient may appear overdone on another. This is why standardised crease measurements are less useful than a personalised assessment.
Choosing Based on Preference
Beyond anatomy, personal preference plays a significant role. Some patients want the most subtle change possible, a crease that looks like it could have been there naturally. Others prefer a more visible fold that changes the overall character of the eye area. Neither preference is better than the other, and a skilled surgeon can accommodate a range of aesthetic goals within the boundaries of what your anatomy allows.
Looking at photographs during the consultation can be helpful, but it is important to understand that results depend on your own eyelid structure rather than being an exact copy of someone else's outcome. Consult your surgeon about which crease style would best complement your individual features and the look you are hoping to achieve.
