Lateral canthoplasty: when does it require a redo?

Research compiling numerical data on the rate of regression for lateral canthoplasty is not available. What is known is rather what happens when the procedure does not go well — techniques for correction have been reported for deformity of the lateral canthus and displacement of the lower-lid position.[1]When considering a redo, the issue becomes not just appearance but also the support structure of the lower lid.

Is the rate of regression known from research?

There are no consolidated figures. For lateral canthoplasty, dedicated research compiling the rates of regression or correction is not found; most reports are case presentations or descriptions of individual techniques.[2][3].

Therefore, explanations such as "it rarely regresses" or "it often regresses" are not currently supported by research data. The basis for judgment is not percentages but your own lid condition and the specifics of what may occur.

In what condition does it require a redo?

When the shape of the lateral canthus is compromised and the lower-lid position is displaced. After inappropriate technique, deformity of the lateral canthus and lower-lid position abnormality occur, and cases requiring correction and stabilization techniques have been organized as retrospective research.[1].

What is addressed here is not just appearance but issues affecting lid function. Since lateral canthus widening surgery involves the lateral support structure of the lower lid, weakening of support affects both form and function.[1].

Do redness and conjunctival problems occur?

These are reported to occur. There is a case report of conjunctival cul-de-sac fistula following cosmetic lateral canthoplasty, and while this technique is widely performed, opinions differ regarding complications, as noted in the background.[3].

Since this is a case report, the frequency of occurrence is unknown. However, the existence of such reports itself demonstrates the premise that lateral canthus surgery involves mucosal tissue. If swelling or redness persists, seek medical attention rather than waiting on your own judgment.

If you want to widen it not just laterally but also vertically, what are the options?

Conventionally, these have been performed as separate procedures. In East Asia, surgery to widen the lateral canthus and surgery to increase vertical palpebral fissure have been performed as distinct operations, and a new technique achieving both simultaneously has been reported.[2].

In other words, the desire to "make the eyes larger" divides into the lateral widening issue and the vertical opening issue. When it becomes clear which is desired, the choice of surgery changes.[2].

What is done when the lower lid drops?

Methods to reinforce support are being evaluated. For lower-lid retraction, various graft materials serving as support have been compared, and there is a systematic review organizing efficacy and complications.[4].

There is also a review summarizing effectiveness and safety for treatment of lower-lid position abnormality in general.[5]Even in tumor reconstruction reports involving lateral lid surgery, follow-up observation spans months to years, making it a field requiring long-term monitoring.[6].

Four things to confirm at consultation

First, whether you want to widen it laterally or open it vertically.[2]Second, how much support the lateral lower lid currently has.[1]Third, how to correct it if the shape becomes compromised.[1]Fourth, the contact information if redness or discomfort persists.[3].

The lateral canthus shape varies depending on bone prominence, lower-lid tension, and skin laxity. The likelihood of regression cannot be shown numerically in advance, so please have your lid condition examined and together decide how much to widen.