Incisional vs Non-Incisional Double Eyelid Surgery: A Complete Decision Tree

Q: How high should the crease be set?

There is no single correct height. Common design ranges in Korean practice sit roughly between 6 and 9 millimetres from the lash line, depending on tarsal plate height, brow position and orbital depth.

Q: Is asymmetry after surgery normal?

Mild asymmetry during the first 2 to 3 months is common. Persistent asymmetry beyond 6 months is a reasonable trigger for review.

2 hours ago
6 min read

Double eyelid surgery creates a supratarsal crease in an eyelid that does not naturally have one, and the two main routes are non-incisional, which anchors the crease using buried sutures placed through small punctures, and incisional, which uses a continuous incision to remove or reposition tissue before fixing the crease. Choosing between them is not a matter of preference or budget alone. It is largely determined by three measurable features of your eyelid: skin thickness, the amount of excess skin and orbital fat, and whether any degree of ptosis is present. This guide sets out the decision logic in the order a surgeon actually applies it, and is written for patients researching double eyelid surgery in Korea who want to arrive at consultation able to evaluate the recommendation they receive.

Portrait illustrating the incisional versus non-incisional double eyelid surgery decision tree

How the Two Techniques Differ Mechanically

In a non-incisional procedure — often marketed as the buried suture, DST or partial-incision method — the surgeon places two to four small punctures along the intended crease line and threads permanent sutures that tether the eyelid skin to the levator aponeurosis or upper tarsal border. When the eye opens, the levator pulls on that tether and a crease folds. No tissue is removed.

In an incisional procedure, a continuous incision is made along the planned crease. The surgeon can then excise redundant skin, remove or redistribute pretarsal and orbital fat, thin bulky orbicularis muscle, and suture the skin directly to the levator aponeurosis. The crease that results is anchored by a healed scar plane rather than by suture tension alone.

That single mechanical difference explains nearly everything else. A suture-tethered crease can loosen; a scar-anchored crease generally does not. Conversely, a suture-tethered crease can be revised or reversed relatively easily, while a scar-anchored crease is difficult to undo.

Step One of the Decision Tree: Eyelid Thickness

Thick eyelids — characterised by heavy pretarsal fat, a bulky orbicularis oculi muscle and thicker dermis — resist folding. A buried suture in a thick lid must work against considerably more tissue mass every time the eye opens, and the crease it produces tends to be shallower, less defined and more prone to loosening over time.

Thin eyelids with minimal fat fold easily. A buried suture in a thin lid can produce a crisp, natural crease with minimal downtime. This is why the non-incisional method is often described as best suited to younger patients with light, unpuffy lids — that description is really a proxy for tissue thickness.

If a clinic recommends a non-incisional procedure for a visibly thick, puffy lid without explaining how they will address the bulk, that is a reasonable point to question.

Step Two: Skin Excess and Dermatochalasis

The non-incisional method removes nothing. If there is genuine excess upper eyelid skin — a hooding fold that overhangs the lash line or, in older patients, extends laterally — creating a crease underneath it will not resolve the hooding. In some cases it can accentuate it, because the new fold gives the redundant skin a defined edge to drape over.

Where excess skin is present, an incisional approach, sometimes combined with a brow-level procedure in older patients, is generally the technically appropriate answer. A rough clinical rule of thumb used at consultation is a pinch test: if lifting the excess skin with forceps is needed to reveal a workable crease height, excision is likely required.

Step Three: Ptosis — The Factor Most Often Missed

Ptosis is drooping of the upper lid margin caused by weakness or disinsertion of the levator muscle, not by excess skin. It is measured by margin-to-reflex distance and by levator function. A meaningful proportion of patients who present asking for double eyelid surgery have some degree of unrecognised mild ptosis, and this is the single most common reason for a disappointing result.

If ptosis is present and only a crease is created, the eye still does not open fully. The patient sees a crease but continues to look sleepy, often compensates by raising the brow, and may return unhappy without being able to articulate why. Correct management is a combined crease-plus-levator procedure, which is an incisional operation. Ask explicitly at consultation whether your MRD-1 and levator function were measured. A clinic that has not measured them has not fully assessed you.

The Gap in Most Comparisons: Honest Durability and Revision Data

Most published comparisons stop at recovery time. The more useful question for a patient deciding between methods is: how likely is it that I will need a second operation?

Clinical literature and surgeon consensus generally report that buried-suture creases can partially or completely loosen over time, with reported loosening or revision rates in published series varying substantially — commonly cited in the range of roughly 5 to 15 percent depending on patient selection, technique variant and follow-up length, and higher when the method is applied to thick lids. Incisional creases are considered durable for decades in the large majority of patients, though the crease can still change in appearance with age-related brow descent.

The counterweight is reversibility. If a non-incisional crease is set too high or looks unnatural, the sutures can often be removed and the eyelid returned close to baseline. Revising an incisional crease means operating through existing scar, and lowering a crease that was set too high is one of the harder problems in oculoplastic surgery. This asymmetry — easier to revise but more likely to need revision, versus harder to revise but less likely to need it — is the real trade-off, and it is rarely stated plainly.

Recovery Timelines You Can Plan Around

Non-incisional: visible swelling and bruising typically settle substantially within 5 to 7 days. Sutures at the puncture sites, where used, are usually removed around day 4 to 5. Most patients consider themselves presentable for work at roughly 1 to 2 weeks, with the crease continuing to soften and settle over 2 to 3 months.

Incisional: sutures are generally removed at day 5 to 7. Noticeable swelling commonly persists for 2 to 4 weeks, and the incision line typically remains slightly pink and firm for 2 to 3 months. Final crease settling is usually described as taking 3 to 6 months, occasionally longer in thick lids. International patients should plan a minimum in-country stay of around 7 days to cover suture removal and one review appointment.

These are typical patterns, not guarantees. Individual healing varies, and any clinic offering a precise recovery guarantee is overstating what is knowable.

Cost Structure and What Should Be Itemised

Incisional surgery costs more than non-incisional in essentially every market, reflecting longer operative time and greater technical demand. Adding ptosis correction increases the price further and is normally quoted as a separate line item. Epicanthoplasty, if recommended to widen the inner eye, is again separate.

Request an itemised written quotation covering surgeon fee, anaesthesia type and fee, facility charge, post-operative visits, and the clinic's stated policy on revision within the first year. Bundled single-number quotations make it difficult to compare clinics and difficult to identify what has been added to the plan.

Frequently Asked Questions

Can I have non-incisional surgery now and incisional later if it loosens?

Generally yes, and this is a common sequence. Previous buried sutures are removed and the crease is redone incisionally. It is not a wasted first operation, but it does mean two procedures and two recovery periods, which should be factored into the initial decision rather than discovered afterwards.

Will a non-incisional crease look less natural?

Not inherently. In a suitable thin eyelid the result can be very natural. Naturalness is determined far more by crease height, crease shape and how well it matches your orbital anatomy than by which technique produced it.

Do I need epicanthoplasty as well?

Not necessarily. Epicanthoplasty addresses a prominent medial epicanthal fold and changes the inner eye shape permanently. It is a separate aesthetic decision with its own scar considerations, and it should be discussed on its own merits rather than bundled automatically into a double eyelid package.

How high should the crease be set?

There is no single correct height. Common design ranges cited in Korean practice for a natural in-fold to out-fold result sit roughly between 6 and 9 millimetres measured from the lash line, but the appropriate figure depends on your tarsal plate height, brow position and orbital depth. Ask to see the design marked on your own eyelid before you consent.

Is asymmetry after surgery normal?

Mild asymmetry during the first 2 to 3 months is common because the two lids rarely swell at exactly the same rate. Persistent asymmetry beyond 6 months is a reasonable trigger for review. Note that most people have some pre-existing eyelid asymmetry, which surgery reduces rather than eliminates.

Preparing for Your Consultation

Arrive knowing three things about your own eyes: whether your lids are thick or thin, whether you have hooding skin, and whether one eye opens less than the other. Those three observations map directly onto the decision tree above and will let you follow — and challenge — whatever recommendation you receive. Our coordinators can help arrange multilingual consultations and compare written treatment plans across clinics before you commit.