By Dr. Rylan Hayes — The Vision Surgeon, Maroochydore, Sunshine Coast, QLD
One of the most common questions I hear from patients considering pterygium surgery is: “Will it come back?” It’s a completely valid concern — particularly here on the Sunshine Coast, where the lifestyle that makes this place so extraordinary also creates the conditions that allow pterygium to thrive. The short answer is: it can, but with the right surgical technique and post-operative care, recurrence is far less common than many patients fear.
In this post, I want to explain honestly what the evidence tells us about pterygium recurrence, what factors increase the risk, and what we do at The Vision Surgeon to minimize that risk for our patients.
What Is Pterygium Recurrence?
Pterygium recurrence is defined as the regrowth of fibrovascular tissue across the limbus and back onto the corneal surface following surgical removal. The recurrent tissue often grows faster and can be more aggressive than the original pterygium, which is why getting the surgery right the first time matters.
Not all regrowth is equal — some patients develop a small fibrovascular band that is cosmetically noticeable but clinically insignificant, while others develop a full recurrence that invades the visual axis and requires revision surgery. Kwon and Kim (2015) described three distinct morphological patterns of recurrence following conjunctival autograft surgery: regrowth over the epithelial defect, transformation of the graft tissue itself, and regrowth from incompletely excised pterygial tissue.
How Common Is Recurrence — And Does Surgical Technique Matter?
The honest answer is that recurrence rates vary enormously depending on how the surgery is performed, and this is where surgical technique makes a decisive difference.
- Bare sclera excision — where the pterygium is simply cut away and the underlying sclera left exposed — carries a recurrence rate that can exceed 80% in some studies. This technique was common in earlier decades and is still used in some settings. The results, unfortunately, speak for themselves.
- Conjunctival autograft — currently the gold standard — involves harvesting healthy conjunctival tissue (usually from the superior bulbar conjunctiva) and using it to cover the area from which the pterygium was removed. This fundamentally changes the biological environment at the excision site, reducing the stimulus for fibrovascular regrowth.
The evidence for conjunctival autograft is robust. A Cochrane systematic review of 1,947 eyes across 20 randomized trials found non-recurrence rates of approximately 93–94% at 3 months with either conjunctival or limbal autograft. Long-term retrospective data on conjunctival autograft with fibrin glue have shown recurrence rates as low as 4.4% over follow-up periods extending to ten years.
Fibrin Glue vs. Sutures
Signature no-stitch pterygium surgery by The Vision Surgeon uses fibrin glue (tissue adhesive) rather than sutures to secure the conjunctival graft. This is more comfortable for the patient post-operatively and reduces handling of the delicate graft tissue during fixation. Multiple studies have found no statistically significant difference in recurrence rates between sutures and fibrin glue — the critical variables are the quality of the graft itself and the completeness of the initial excision.
What Factors Increase the Risk of Recurrence?
Several patient and environmental factors are independently associated with higher recurrence risk.
Younger Age
Consistently across the literature, younger patients have higher recurrence rates. Patients under 40 years of age have significantly greater odds of recurrence — one study reported an odds ratio of 5.82 for patients younger than 40. This is thought to be related to higher cellular proliferative activity and a more robust fibroblastic response in younger patients.
This doesn’t mean we avoid surgery in younger patients — far from it — but it does inform the conversation about post-operative UV protection and follow-up frequency.
Ongoing UV Exposure
Ultraviolet radiation is the primary aetiological driver of pterygium and plays an equally important role in its recurrence. Research has found that patients with ongoing outdoor occupational UV exposure had a 27% recurrence rate following pterygium excision, compared to just 10% in those without significant UV exposure. The dose-response relationship is well established: patients in the highest quarter of daily ocular UV exposure have odds ratios for pterygium approaching 6.8.
For our Sunshine Coast patients — many of whom surf, fish, work outdoors, or simply spend significant time outside — this is a crucial post-operative message. The surgery removes the pterygium; it does not remove the UV environment that caused it.
Inflammation and Pterygium Grade
A more advanced pterygium at the time of surgery is associated with a higher recurrence risk. Recent research has also implicated systemic inflammatory markers — specifically the neutrophil-to-lymphocyte ratio (NLR) — as predictors of post-operative recurrence, with an odds ratio of 4.35 for elevated pre-operative NLR.
What Do We Do to Minimize Recurrence?
At The Vision Surgeon, our approach involves:
- Complete excision: The pterygium tissue — including sub-Tenon’s fibroblastic tissue — is removed as thoroughly as possible. Incomplete removal is one of the most avoidable causes of recurrence.
- Conjunctival autograft with fibrin glue: Our standard technique, delivering recurrence rates well below simpler approaches.
- Meticulous graft positioning: The graft must be correctly oriented limbus-to-limbus and placed without tension or fold.
- UV protection counseling: Every patient leaves with clear instructions about the importance of high-quality wraparound UV-protective sunglasses, especially in the months following surgery.
- Structured follow-up: Early post-operative appointments allow us to identify any early fibrovascular regrowth and intervene promptly.
What Should Patients Do After Pterygium Surgery?
- Wear UV-protective wraparound sunglasses whenever outdoors — this is non-negotiable, especially in the first 12 months
- Attend all scheduled follow-up appointments
- Report any redness, growth, or irritation at the surgical site promptly
- Use the prescribed anti-inflammatory eye drops as directed for the full course
- Avoid dusty, smoky, or windy environments in the early recovery period
Conclusion
Pterygium recurrence is a real possibility, but with modern surgical technique, it is not the norm. Conjunctival autograft surgery, performed thoroughly and with good post-operative UV protection, delivers recurrence rates well under 10% in the majority of published series.
If you have a pterygium causing symptoms, vision changes, or cosmetic concerns, I encourage you to book a consultation. You can also take our Pterygium Symptoms Self-Assessment Quiz to understand better the impact your symptoms may be having before your appointment.
To learn more about our no-stitch technique, visit our No-Stitch Pterygium Surgery page.
References
- Kwon SH, Kim HK. Analysis of Recurrence Patterns Following Pterygium Surgery With Conjunctival Autografts. Medicine (Baltimore). 2015;94(4):e518. PMC4602970.
- Clearfield E, et al. Conjunctival autograft for pterygium. Cochrane Database Syst Rev. 2016;2(2): CD011349. PMC5032146.
- Alpay A, et al. Conjunctival Autograft With Fibrin Glue for Pterygium: Long-Term Recurrence Assessment. J Clin Med. 2019. PMC6778675.
- Sekelj S, et al. UV light and pterygium recurrence. Coll Antropol. 2007;31 Suppl 1:45-7. PMID:17469749.
- Threlfall TJ, English DR. Sun exposure and pterygium: a dose-response curve. Am J Ophthalmol. 1999;128(3):280-7. PMID:10511020.
- Tan DTH, et al. Pterygium: epidemiology, prevention and treatment. Br J Ophthalmol. 2006. PMC5968422.
- Zhang X, et al. Risk factors for pterygium recurrence. Sci Rep. 2025. PMC11850787.
- Shahraki T, et al. Pterygium: update on pathophysiology, clinical features, and management. Ther Adv Ophthalmol. 2021. PMC8170279.
