Key Takeaways:
- Transconjunctival blepharoplasty removes or repositions lower eyelid fat through an incision made inside the eyelid, leaving zero visible scar on the skin.
- The right candidate has fat bulging with good skin tone and no excess skin, festoons, or eyelid retraction. Anatomy determines suitability, not patient preference alone.
- This approach carries a lower risk of ectropion than transcutaneous techniques but introduces its own tradeoffs, including difficulty anchoring fat to the orbital rim and the general risk of internal scarring that accompanies any surgical procedure.
- Surgeons should choose a surgical approach based entirely on individual eyelid anatomy, not a house preference or a trend.
- Adding cantholysis to a transconjunctival approach unlocks additional capabilities but may permanently alter eye shape, a real tradeoff covered in detail below.
Lower eyelid surgery is a family of techniques, each built for a specific set of anatomical problems. Understanding why one approach fits and another does not starts with the incision itself.
The Scarless Lower Eyelid Surgery Built for Fat, Not Skin
Transconjunctival blepharoplasty is a lower eyelid surgery designed to address fat bulging without leaving any mark on the outside of the face. The incision is placed on the conjunctiva, the moist inner surface of the eyelid, so it stays completely hidden from view. Fat pockets are either removed or repositioned, and the incision self-seals or receives one or two small internal stitches.
That single design choice, an internal incision rather than an external one, defines both what this procedure excels at and exactly where it stops being useful. For the right patient, it is a precise and elegant tool.
How the Incision Works
Hidden Inside the Eyelid
The transconjunctival incision sits between the back of the lower eyelid and the eyeball itself. There is no lash-line marking, no external sutures, and no visible healing on the skin surface. Recovery tends to involve less bruising and swelling than external approaches, with many patients returning to normal activity within a week to ten days.
What Surgeons Can Reach From There
From inside the eyelid, a surgeon can access the three fat compartments of the lower lid directly. Fat can be removed to flatten a bulge or, more commonly in modern practice, repositioned downward into the hollow beneath the eye. That repositioning technique, known as fat transposition, is a widely preferred approach in lower eyelid blepharoplasty. Moving existing orbital fat to fill the tear trough tends to produce a natural result, though fat grafting from elsewhere in the body may be more appropriate or complementary in certain anatomical situations.
What the incision cannot reach: the skin surface, the orbicularis muscle layer beneath it, or the deeper structural support tissues responsible for festoons and midface descent. The access point is hidden, but it is also limited.
Who Is the Right Candidate?
Fat Bulging With Good Skin Tone
The ideal transconjunctival candidate has fat prolapse, the lower eyelid bags that come from orbital fat pushing forward, combined with skin that still has good elasticity. No excess skin. No significant laxity in the eyelid itself. No festoons. No existing retraction or ectropion. When those conditions are met, the internal approach handles the primary problem without creating additional risks.
Younger patients often fit this profile well, since skin elasticity tends to be higher earlier in life. That said, age alone is not the deciding factor. Eyelid tone, fat distribution, and skin quality are assessed individually during examination.
Skin Types That Benefit Most
Skin type plays a real role in this decision. Patients with East Asian, South Asian, and Southeast Asian skin, as well as patients with African American skin, carry a higher risk of hypertrophic scarring, pigment changes, or visible ridging from external incisions. For these patients, avoiding a subciliary scar is a clinically meaningful reason to favor the transconjunctival route, even when it means accepting some limitations in what the surgery can accomplish.
Where Transconjunctival Wins
When the anatomy fits, the advantages are clear:
- No visible scar. The incision is entirely internal, with nothing visible on the skin surface.
- Lower ectropion risk. The tarsoligamentous sling, the deep structure holding the lower lid against the eyeball, is disturbed far less than in transcutaneous surgery. That structural preservation directly reduces the risk of the lid turning outward after the procedure.
- Faster recovery. No external sutures means the healing timeline is generally shorter, with less bruising and swelling than lash-line approaches.
- Preferred for sensitive skin types. For patients whose skin scars, pigments, or keloids more readily, the internal approach removes the most significant scarring risk from the equation.
What It Cannot Do
No Skin Removal
Excess lower eyelid skin cannot be addressed from the inside. If skin laxity is present, even mildly, transconjunctival surgery leaves it unresolved. A transcutaneous incision, a skin pinch procedure, or a skin-tightening treatment like laser resurfacing would be required to address it separately.
Festoons, Retraction, and Midface Descent Stay Unresolved
Transconjunctival blepharoplasty lowers the risk of causing lower eyelid retraction compared to other techniques, but it does not resolve retraction that already exists. The same applies to festoons, those persistent puffiness mounds sitting just below the orbital rim, and midface descent. Each of these conditions involves skin, muscle, and deeper structural tissue that cannot be adequately accessed through an internal incision alone. Attempting to use this approach on anatomy that genuinely needs a transcutaneous technique does not reduce those problems; it leaves them in place while adding a recovery period.
Transconjunctival vs. Transcutaneous: The Real Differences
The transcutaneous approach uses an external subciliary incision, a fine line placed just under the lash line running the length of the lower lid. From that access, a surgeon can lift skin, tighten the orbicularis muscle beneath it, reposition or remove fat, elevate descended midface tissue, and address pre-existing retraction or festoons. It handles the full range of lower eyelid concerns. The tradeoff is the scar itself, which heals invisibly for most patients but carries real risk of visible ridging or pigment change in certain skin types.
Factor Transconjunctival Transcutaneous External scar None Subciliary (usually fades) Skin removal Not possible Yes Muscle tightening Not possible directly; muscle is preserved but not actively tightened Yes Fat repositioning to bone Harder; often requires bolsters Cleaner, more secure Festoon treatment No Yes Ectropion risk Lower Higher if technique is poor Best for Fat only, good skin tone Skin excess, festoons, laxity
When Cantholysis Changes the Equation
One meaningful modification to the transconjunctival approach is adding cantholysis, a controlled release of the lateral canthus, the outer corner of the eye. That release opens the surgical field considerably, allowing a surgeon to suture repositioned fat directly to the orbital rim bone without placing small skin incisions at the cheek level and without the external cotton bolsters that otherwise sit on the face for one to two weeks during healing.
Cantholysis also makes it possible to tighten a mildly retracted eyelid through the same approach. For patients who want the internal incision, need fat anchored securely to bone, and have mild lower-lid laxity, it is a meaningful addition.
The tradeoff is permanent: releasing and reforming the lateral canthus can change the shape of the eye, usually subtly, sometimes more noticeably. That is a real consideration that some patients accept and others do not.
Related but distinct: canthoplasty (structural reconstruction of a fully cut lateral canthus, used when the eyelid needs meaningful support) and canthopexy (an internal dissolvable stitch that temporarily reinforces the outer corner without altering eye shape permanently) are often confused with each other. They are different operations with different indications, and either can be added to either a transconjunctival or transcutaneous approach depending on what the eyelid needs.
How Oculoplastic Surgeons Choose an Approach
The selection process follows the anatomy, in roughly this order:
- Is there real skin excess? If yes, transcutaneous. Transconjunctival cannot fix it.
- Festoons present? If yes, transcutaneous, sometimes with adjunct midface support.
- Is the midface descending? If yes, transcutaneous, often paired with midface lifting.
- Existing lower-lid retraction, ectropion, or significant laxity? If yes, transcutaneous, or transconjunctival with cantholysis when retraction is mild and the patient prioritizes minimal external scarring.
- Fat bulging only, good skin tone, no retraction, no festoons? Transconjunctival is the clean answer. Cantholysis is added if fat anchoring to bone is needed.
- Skin-type considerations. Patients with Asian, African American, or hypertrophic-scarring history receive a deeper conversation about transcutaneous scar risk, sometimes tipping the decision toward transconjunctival even if it sacrifices some capability.
- Revision cases. Prior surgery changes the anatomy. Scar tissue, existing retraction, and lash-line changes can push the decision either direction. This is where surgical experience matters most.
Anatomy Determines the Answer, Not Surgeon Preference
A point raised consistently by oculoplastic specialists: some surgeons default to the same technique for all patients because it is the approach they are most comfortable with. That is a surgeon-centered decision, not a patient-centered one. The most appropriate lower eyelid surgery is the one that fits the patient's anatomy and goals. Skin quality, fat distribution, eyelid tone, facial structure, prior surgery history, and skin type all factor into the answer.
Oculoplastic surgeons, ophthalmologists with additional subspecialty training in plastic and reconstructive surgery of the eyelids, orbit, and tear drainage system, bring a depth of periorbital anatomical knowledge that directly shapes these decisions. That specificity matters when the structure being operated on is millimeters from the eye itself.