If you’ve spent any meaningful time outdoors in Queensland — and most of us have — your eyes have been absorbing UV radiation for decades. Pterygium is one of the predictable consequences of that exposure, and it’s something I see in my clinic almost every week.
It’s also a condition that has historically been associated with a somewhat dreaded reputation: uncomfortable surgery, a long and irritating recovery, and — perhaps most significantly — a frustrating tendency to come back. I want to explain why that reputation, while once deserved, no longer applies to the way we do things today.
What is a pterygium?
A pterygium (the “p” is silent — teh-RIJ-ee-um) is a wedge-shaped growth of thickened conjunctival tissue that extends from the white of the eye onto the cornea — the clear front surface. It nearly always starts on the nasal side, closest to your nose, and grows slowly toward the centre of your vision.
Pterygia are not cancerous. They are not dangerous in the short term. But they are progressive, and left untreated they can cause persistent redness and irritation, induced astigmatism that blurs your vision, and — in advanced cases — encroachment onto the visual axis itself.
In Queensland, we are effectively the pterygium capital of Australia. The combination of intense UV exposure, time spent outdoors, and our demographics means I operate on far more pterygia than my colleagues in cooler, less sun-drenched states.
| ~12% Prevalence in sunny, outdoor-active Australian adults | 2–3× Higher risk in Queensland vs southern states | <3% Recurrence rate with modern sutureless technique |
When does a pterygium need to come out?
Not every pterygium requires surgery. Small, stable pterygia that aren’t affecting vision can be monitored and managed with lubricating drops to reduce irritation. I tell patients to think of it like monitoring a skin lesion — we watch it, we document it, and we act when there’s a reason to act.
The indications I use for recommending surgery are straightforward. If the pterygium is growing toward the centre of the cornea — particularly once it’s within 2–3 mm of the visual axis — I recommend removal before it induces significant astigmatism or threatens vision directly. If it’s causing persistent discomfort, redness, or tearing that isn’t controlled with drops, that’s another clear indication. And if a patient is planning cataract surgery or refractive surgery, a pterygium must come out first — it distorts the corneal measurements we rely on to calculate the correct lens power, and it will compromise the refractive outcome if it’s left in place.
“The old bare sclera technique gave recurrence rates of 30–80%. Modern conjunctival autograft surgery with fibrin glue has brought that figure down to under 3% in experienced hands.”
The old way — and why it fell short
Pterygium surgery has been performed for centuries, and for much of that time the standard approach was simply to cut the pterygium off and leave the underlying white of the eye exposed — what surgeons call the bare sclera technique. It was quick. It was simple. And the recurrence rates were, frankly, terrible: anywhere from 30 to 80 percent depending on the series.
The next evolution was to close the bare sclera with sutures — either using local conjunctival tissue or a small graft taken from under the upper eyelid. This improved recurrence rates meaningfully, but sutures brought their own set of problems: post-operative discomfort from suture ends rubbing on the inner eyelid, prolonged inflammation, occasional suture abscesses, and a recovery period that patients found genuinely unpleasant.
Many patients I see who had pterygium surgery years ago remember the sutures vividly and not fondly. That experience has, understandably, made some of them reluctant to have the other eye treated — even when they need it.
The sutureless approach — what we do now
The technique I now use for all pterygium surgery is conjunctival autograft with fibrin glue — and the difference in the patient experience is substantial.
Surgery is performed under heavy sedation administered by an anaesthetist, meaning you are completely unaware throughout the procedure. This is not simply “relaxation” — you will have no memory of the operation whatsoever. Combined with local anaesthetic drops and an injection to numb the eye completely, the experience for patients is essentially one of closing your eyes in the anaesthetic bay and waking up with the surgery already done. The anxiety many patients feel about having work done on their eye simply never gets the chance to materialise.
The operation itself takes approximately 30–45 minutes. The pterygium is carefully excised from the corneal surface and the adjacent conjunctiva. A small graft of healthy conjunctiva is then harvested from under the upper eyelid — an area that heals reliably and is not visible to anyone, including the patient — and precisely positioned over the area where the pterygium was removed.
Here is the key difference from the old approach: instead of suturing the graft in place, we secure it with fibrin glue — a biological adhesive derived from clotting proteins that holds the tissue firmly while the body’s natural healing process takes over. The graft adheres within minutes. No sutures are placed on the eye at all.
The implications for recovery are significant. Patients report much less post-operative discomfort — the gritty, foreign-body sensation that plagued suture-based repair is largely eliminated. The eye looks better faster. And critically, because the graft covers the bare sclera completely and the blood supply is re-established quickly, recurrence rates drop dramatically — consistently under 3% in experienced hands, compared to 30–80% with the old bare sclera technique.
What to expect on the day
You’ll arrive fasted, as required for sedation, and will need a responsible adult to drive you home and stay with you for the remainder of the day — standard procedure after any anaesthetic. The anaesthetist will meet with you beforehand to go through your health history and explain what to expect.
After surgery, you’ll wear a protective patch for a few hours and use antibiotic and anti-inflammatory drops for several weeks as the eye heals. Vision is typically blurred for the first day or two, then improves steadily. Most patients are comfortable returning to desk work within a few days, though I ask everyone to avoid swimming, dusty environments, and heavy exercise for the first two weeks.
The graft site under the upper eyelid heals completely within a few weeks and causes no long-term issues. Patients are often surprised to learn that the donor area is taken from under the lid — it is truly invisible once healed.
A word on prevention
For patients who have had a pterygium removed — and for anyone with early pterygium or a strong family history — UV protection is not optional, it is the single most important thing you can do. Wraparound sunglasses with UV400 protection, worn consistently outdoors, are the best available preventative measure. A broad-brimmed hat adds meaningful additional protection. In Queensland, this is year-round advice — not just for summer.
I make no apology for repeating this recommendation to every patient I see with pterygium. The surgery is now excellent. But the best outcome is the one where you never need a second operation.
The bottom line
Pterygium surgery in 2025 is a genuinely different procedure from what it was ten or twenty years ago. The sutureless, fibrin glue technique offers a faster, more comfortable recovery, a better cosmetic result, and a dramatically lower recurrence rate. And with heavy sedation now standard, the procedure itself is something patients simply sleep through — often their biggest source of relief when I describe it in clinic.
If you have been putting off treatment because of what you heard from someone who had the old procedure, I would encourage you to come in for a conversation. If you have a pterygium that is growing, affecting your vision, or simply bothering you, I am happy to assess it. Surgery is not always the immediate answer — but knowing your options, and having someone watch it properly over time, always is.