Two eye shapes that disappoint in opposite directions
When patients ask which under-eyes are difficult, the usual answers are the familiar ones: severe dark circles, very little fat, skin that has lost its elasticity. All true. But ST's surgeon singles out two eye shapes that receive far less attention and that, in his experience, often lie behind results patients find unsatisfying: the prominent eye and the deep-set eye. They matter because they are opposites. The design that suits one produces the characteristic disappointment of the other, and a single standard version of fat repositioning applied to every face tends to under-treat the first and over-treat the second. Neither counts as a complication in the usual sense. Nothing went wrong in the operating room. The operation was simply not adapted to the eye in front of it. If you have either shape you almost certainly know already — you do not need an ophthalmologist's measurement to tell you — and that knowledge is useful at consultation.
Prominent eyes: the fat has to travel further
A prominent eye sits forward in its socket. It may be inherited, a matter of bone structure, or related to a thyroid condition. Surgeons elsewhere sometimes describe the same situation as a negative vector: seen from the side, the eye projects beyond the cheek beneath it. Because the globe is forward, the fat in front of it is pushed forward as well, and that changes the arithmetic of the surgery. In a standard repositioning the tear-trough ligament is released and the fat is brought down and fixed roughly half a centimetre below it. In a prominent eye, even a small amount of fat left near the rim still reads as a bulge, because the eye behind it keeps pushing it into view. The patient looks in the mirror at three months and concludes that the surgery did not work, or that the bag has come back. Neither is accurate — the fat was never taken far enough. For these eyes ST carries the fat considerably further, around a centimetre or more below the ligament and toward the front of the cheek, and makes a point of finding the fat in all three compartments so that none stays behind. That means a deeper and wider dissection and more fat moved than in an average eye. It is a more demanding operation, which is why it is worth asking any surgeon how they adapt the plan for prominent eyes.
Deep-set eyes: less is moved, and some is left on purpose
A deep-set eye is the reverse. The globe sits behind the line of the orbital rim and the tear-trough ligament, so the rim forms a small hill with the eye in the valley behind it. Apply the prominent-eye logic here — move all the fat, carry it far down — and the result is a recognisable problem. The area above the rim empties, the fat now sitting on the front of the cheek adds to a cheekbone that already stood out, and the eye looks more sunken and the cheek more pronounced than before the surgery. Patients describe this as looking gaunt, or as their cheekbones having suddenly appeared. The design for a deep-set eye is therefore restrained. The fat is placed close to the ligament, not far below it; repositioning is deliberately not carried out to its full extent; and some fat is left in place above the rim to keep the support the eye needs. In a few of these patients, a small graft into the fat compartment is a better tool than moving more fat.
| Prominent eye | Deep-set eye | |
|---|---|---|
| Position of the globe | Forward of the cheek | Behind the orbital rim |
| Where the fat is placed | Well below the ligament, toward the front of the cheek | Close to the ligament |
| How much fat is moved | More than average; all three compartments cleared | Less than average; some left deliberately |
| Typical disappointment if done the standard way | Looks like no effect, or like early recurrence | Cheekbone looks more prominent, eye looks more hollow |
| What to ask | Photographs of prominent eyes you have operated on | Photographs of deep-set eyes you have operated on |
The four approaches, and which eyes they suit
Eye shape decides how far the fat travels. A separate decision is how the surgeon gets in, and it depends on the skin and on the support of the lid, not on the fat. The repositioning itself is the same in all four: release the ligament, fix the fat to the bone membrane at several points, reinforce the septum over it. The transconjunctival approach goes through the inside of the lid with no skin incision, and suits patients with good skin elasticity — typically younger patients, and uncomplicated revisions as well. The incisional approach adds a skin incision just under the lashes so that loose skin and muscle can be lifted and trimmed; it suits older patients, skin stretched by years of rubbing from allergies, and revisions in which foreign material has to be removed. The placement of that incision is exact: about two to three millimetres below the lash line. Closer, and the lash roots are at risk; much lower, and the scar stays visible. Between the two is a partial-incision option: the repositioning is done from the inside, and a short incision at the outer corner is used only to lift the muscle, for patients with mild laxity who do not want a full incision. The fourth element is an add-on, not an alternative — a canthopexy-type tightening of the outer corner, (a standard technique; Pentagon procedure is simply ST's in-house name for its version), for lids with poor tone, a history of ectropion, or revision cases in which the lid could otherwise be pulled down. The surgeon's image for it is a slack clothesline pulled taut.
| Approach | Skin incision | Typically suits |
|---|---|---|
| Transconjunctival | None | Good skin elasticity; bulge and shadow without skin excess; simple revisions |
| Incisional | Just under the lash line, about 2 to 3 mm below it | Loose skin or muscle; older patients; revisions that need foreign material removed |
| Transconjunctival with partial outer incision | A short incision at the outer corner | Mild laxity; patients who want some lift without a full incision |
| Outer-corner tightening added to either | Depends on the main approach | Weak lid tone, ectropion risk, revision surgery |
When fat grafting is added — and when it is not
Grafting is a third variable, and patients hear contradictory things about it: some are told that under-eye fat grafting should never be done, others that everyone needs it. ST's view is that neither holds as a general rule. Most patients do not need a graft. Some clearly do: eyes whose two sides differ in fat volume or in the depth of the groove, so that repositioning alone would leave one side brighter than the other; eyes from which fat was removed in an earlier surgery, or which never had much; and eyes where visible vessels or thin skin are part of the dark circle. Two different grafts do two different jobs. Ordinary purified fat is placed deep, inside the fat compartment, to restore volume and balance the two sides. It is not placed in the moving layers of muscle and skin, where it can clump. Concealer fat is processed to a much finer, almost fluid consistency so that it can be laid shallowly, close to the skin, without forming lumps — to mask show-through or to soften a shallow groove that the deeper layers cannot reach. Which of these a given eye needs, if either, is a matter of diagnosis, not of clinic policy.
What this means at consultation
None of this can be read from a published study with a table of distances. How far to carry the fat and how much to leave is judgment, built from operating on many eyes and seeing how each shape heals. ST's surgeon says of his own career that it took roughly ten years before he was consistently adapting the operation to the shape of the eye — a statement about his own path, not a rule about anyone else's, but a useful indication of what kind of skill this is. For a patient the practical test is simple. Say what you are: I have prominent eyes, or I have deep-set eyes. Then ask to see before-and-after photographs of patients with the same eye shape. A useful answer explains what would be done differently for your eye shape, and why. All surgery carries risks, including bleeding, infection, asymmetry, scarring and lid malposition; results and recovery vary between individuals.