At the corners of the eye are structures which support the lower lids in place against the eye. When that support breaks down, shifts out of place, or is injured, canthoplasty may be performed to return the lid to its proper position and function. It may be done for functional issues, as a reconstructive procedure, or for certain aesthetic reasons.
A related procedure which is canthopexy also supports the outer lid, but the two methods are different. What is best for the patient depends on eyelid laxity, eye surface health, symptoms, and anatomy.
What Is Canthoplasty?
Canthoplasty is a surgical procedure which involves the lateral canthus, that is the area where the upper and lower eyelids meet at the outer corner of the eye. The surgeon may release, shorten, reposition and secure the lateral canthal tendon to thus improve support or contour.
In the case of lateral canthoplasty, the surgeon focuses on that outer corner. As for canthopexy which is usually a procedure that tightens or suspends the present tissues with sutures without full detachment of the tendon. From a review done at PubMed it is put forth that for severe cases of eyelid laxity stronger restructurings may be the choice which is to say radical action, for mild cases we see canthopexy put forth as a solution.
Why Is This Surgery Performed?
A doctor will put you down this route when you have a lower eyelid which is very loose, which turns outwards, which sits too low, or which has stopped to rest properly against the eye. Also it may be for select cases of ectropion, eyelid retraction, age related laxity, lateral canthal displacement, or changes which came about after prior eyelid surgery.
Sometimes canthoplasty surgery is performed in conjunction with other eyelid procedures for extra support. An eye specialist field will determine if surgery is appropriate.
| Situation | Why treatment may be considered |
| Lower-eyelid laxity | To restore horizontal eyelid support |
| Ectropion or malposition | To improve eyelid position against the eye |
| Eyelid retraction | To support repositioning in selected patients |
| Reconstructive surgery | To stabilise the outer eyelid corner |
Canthoplasty vs Canthopexy
Although the terms are similar these procedures are different in technique. Canthopexy what we do is support the existing lateral canthal tendon with careful sutures. The more in depth procedure may include division, shortening, repositioning and reattachment of the tendon.
This issue is important because we may only see a case for canthopexy, in which mild laxity is present and that may not require a more in depth procedure like lateral canthoplasty. that is used for more marked deformity. In a report from PubMed Central on lateral canthal tendon support it is put out that canthopexy is also used for a more gentle correction this approach is also what we use to try and avoid detaching the lateral canthal tendon.
| Procedure | General approach | Typical role |
| Canthopexy | Tightens or suspends canthal tissues with sutures | Often considered for milder laxity |
| Reconstructive technique | Repositions and secures canthal structures | May provide stronger correction |
| Lateral canthoplasty | Restructures the outer eyelid corner | Functional, reconstructive, or selected aesthetic use |
What Happens During Canthoplasty Surgery?
Before canthoplasty surgery, the surgeon will look at the eyelid tone, position, symmetry, tear film health, and also past surgical changes. Anesthesia will depend on the planned procedure and the patient’s needs.
During surgery the doctor works on the outer eyelid corner, repairs the support structures and puts them in place near the outer orbital rim. The approach may vary by case also which at time is combined with other appropriate eye treatments.
Recovery After Surgery
Swelling, bruising, tenderness, tightness, and temporary eye irritation are common post surgery. What you will see of these symptoms may vary as healing does not progress the same in all patients.
After can be as little as a few weeks post canthoplasty surgery, in which case follow up visits are for the doctor to check in on the wound healing, eyelid position and the eye surface. In the interim patients may have to forgo rubbing the eye, part in very vigorous activities, swimming, wearing contact lenses, or use eye make up.
Risks and Possible Complications
Like in any other surgical procedure, canthoplasty has issues which present risks. These include infection, bleeding, visible scarring, prolonged swelling, irritation, dry eye symptoms, asymmetry, under correction, over correction, changes in eyelid contour, wound separation, or return of the malposition.
Before going in for surgery patients should talk to an experienced ophthalmologist. About which of the options present, what to expect post surgery and your personal health issues. Should you see a sudden change in vision, severe or growing pain, heavy bleed, or swelling that is quick to get worse, seek in the moment medical attention.
When Should You Consult an Eye Specialist?
If you notice your lower lid turned out, is very loose, has persistent watering or irritation, or has changed post surgery, we recommend you see an eye hospital for an evaluation. Not all eyelid issues require surgery.
At Vasan Eye Care we see that an ophthalmic evaluation will determine which of the options for treatment is best for you which may include canthoplasty,as a reconstructive approach or non-surgical care.
Conclusion
This procedure is for restoration of the outer eyelid in cases of laxity, retraction, ectropion, or other canthal issues. As the operation is of a very delicate nature in which the eyelid structures are concerned, diagnosis and performance of the procedure is of great importance. An experienced ophthalmologist or oculoplastic eye specialist is the one to determine the best approach.
Frequently Asked Questions
1. Is canthoplasty only a cosmetic procedure?
No. Canthoplasty is done for functional, reconstructive, or some cosmetic purposes which depend on the position of the eyelid, symptoms, and anatomy.
2. What is the difference between canthoplasty and canthopexy?
Canthopexy usually tightens present tissues with sutures, at the same time canthoplasty may reposition the lateral canthal tendon for more extensive structural correction.
3. How long does recovery take after canthoplasty surgery?
Recovery is a variable thing. What we see is that swelling and bruising improve over time, at a gradual rate, but full return to normal of the eyelid may take some longer.
4. Is lateral canthoplasty permanent?
Results are for the long term, but with age, tissue elasticity, healing, trauma, or other issues eyelid position may change over time.
References
1. Surgical Preferences for Lateral Canthoplasty and Canthopexy – PubMed, U.S. National Library of Medicine
https://pubmed.ncbi.nlm.nih.gov/25050757/
2. Simplified Technique for Lateral Canthal Tendon Canthopexy – PubMed Central, U.S. National Library of Medicine
https://pmc.ncbi.nlm.nih.gov/articles/PMC9675511/