Published by The Vision Surgeon — Dr. Rylan Hayes, Ophthalmologist, Maroochydore, QLD
The Sunshine Coast is one of Australia’s most enviable places to live. Year-round sunshine, a coastline built for surfers, cyclists, and swimmers, national parks that reward trail runners and hikers, and a culture that draws people outdoors every single day. But this same lifestyle — so central to why people choose this region — creates a set of ocular conditions that are among the most concentrated in Australia. Chief among them is the menacing pterygium.
In the consulting rooms of The Vision Surgeon in Maroochydore, Dr. Rylan Hayes sees pterygia more than almost any other surgical condition. It is not a coincidence. It is geography, latitude, lifestyle, and cumulative UV exposure — a combination that makes Queensland one of the highest-risk environments in the world for this condition. This post explains why, who is most at risk, what the warning signs look like, and what can be done. Patients can also use the Pterygium Symptoms Self-Assessment Quiz to understand the impact their symptoms may already be having.
What Is Pterygium, and Why Does It Develop?
Pterygium (pronounced teh-RIJ-ee-um) is a wedge-shaped, fibrovascular growth that arises from the conjunctiva — the transparent membrane shrouding the white of the eye — and progresses across the limbus onto the corneal surface. Ultimately, it can progress as far as the line of the pupil or beyond. It is not a cancer or a tumor, but it is progressive, meaning it grows over time and, if left unaddressed, can distort the corneal surface, induce astigmatism, and ultimately threaten the visual axis.
The primary cause is cumulative exposure to ultraviolet radiation, particularly UVB light. The World Health Organization has estimated the Population Attributable Fraction of pterygium due to solar radiation at between 42% and 74% — meaning the majority of pterygium cases globally are directly attributable to UV exposure. Additional contributors include wind, dust, dry conditions, and chronic ocular surface irritation, all of which further damage the delicate limbal stem cell niche that normally maintains the boundary between the conjunctiva and cornea.
Why the Sunshine Coast Is a High-Risk Zone?
Australia has some of the highest UV radiation levels on earth, a consequence of its proximity to the equator, the thin ozone layer over the southern hemisphere, and the clear skies that characterize much of the continent. Queensland sits squarely in this “pterygium danger zone” where pterygium prevalence is highest.
The relationship between latitude and pterygium prevalence is one of the most consistent findings in the ophthalmic epidemiology literature. A landmark Australian study examining more than 100,000 individuals in rural Australia found a strong positive correlation between climatic UV radiation levels and pterygium prevalence. A systematic review of 29 international studies confirmed that pterygium prevalence increases markedly with UV index, and that outdoor work is one of the most significant modifiable risk factors — comparable in effect to latitude itself.
A separate Australian population study found that rural residence — associated with greater time outdoors and less shade infrastructure — was associated with a 5.28-fold increased odds of pterygium development compared to metropolitan residence. While the Sunshine Coast blends coastal and semi-rural living, the outdoor culture of the region means UV exposure patterns are closer to rural than to sheltered urban environments for a significant proportion of residents.
Who Is Most at Risk on the Sunshine Coast?
Epidemiological data consistently identify the following as the highest-risk groups for pterygium development:
Surfers, Swimmers, and Watersport Enthusiasts
Water is a highly effective reflector of UV radiation, significantly amplifying ocular UV dose. A person surfing or swimming faces direct UV from above and reflected UV from the water surface simultaneously. The UV index experienced at eye level during water activities can substantially exceed the ambient index. This is the origin of the term “surfer’s eye” as a colloquial name for a pterygium — reflecting its high prevalence in populations with water-based outdoor lifestyles.
The Sunshine Coast’s surf breaks, lake activities, and river recreation mean a large proportion of the local population is exposed to this amplified UV environment across many years of their lives, often from childhood.
Outdoor Workers
Construction workers, tradespeople, landscapers, farmers, fishermen, and tourism industry workers represent a high-risk occupational group across the Sunshine Coast hinterland and coast. A systematic review and meta-analysis found that outdoor occupational exposure is associated with a 1.46-fold increased odds of pterygium development. Because UV exposure accumulates over a lifetime, workers who have spent decades outdoors are at substantially elevated risk regardless of their current sun protection habits.
It has been argued, with some justification, that pterygium in outdoor workers should be considered an occupational disease — a position increasingly supported in the occupational health literature. However, proving causation and assigning responsibility is a more difficult endeavor.
Golfers, Cyclists, Runners, and Hikers
The Sunshine Coast region hosts an exceptional density of cycling routes, trail running networks, golf courses, and national park hiking trails. Each of these activities involves extended outdoor time in high-UV environments, often during the hours of peak solar intensity. Golfers, in particular, face reflected UV from fairways and sand bunkers, as well as direct overhead exposure for multiple hours per round.
Younger People — Who Often Don’t Realize the Risk
A pterygium is not exclusively a condition of older age. A meta-analysis of global population studies found pterygium prevalence increasing from the third decade of life onward, with meaningful rates in the 30–50 age group. Because UV exposure is cumulative, the damage is being done from childhood and young adulthood — long before the pterygium becomes clinically apparent. Young adults who grew up surfing, competing in outdoor sports, or working outdoors on the Sunshine Coast are accumulating the UV exposure that may manifest as pterygium in their thirties and forties.
What Are the Warning Signs?
Pterygia develops gradually, and many patients do not notice them until they have become visually or cosmetically significant. Common signs to watch for include:
- A fleshy, pinkish-white triangular or wedge-shaped growth on the white of the eye, typically on the nasal (nose) side
- Persistent or recurrent redness in the affected area, particularly after outdoor activities
- A gritty or foreign body sensation — the feeling that something is in the eye
- Increasing sensitivity to wind, dust, or bright light
- Gradual blurring or distortion of vision, which may indicate the pterygium is approaching or distorting the cornea
- More frequent changes to glasses prescription, particularly for astigmatism
Many patients first notice their pterygium from a photograph, or when a friend or family member comments on the redness or growth in their eye. This is a common pattern — the gradual nature of the change means those living with it often adapt without noticing.
When Does Pterygium Need Treatment?
Not every pterygium requires immediate surgery. Small, stable pterygia that are not causing significant symptoms, visual disturbance, or progression can often be monitored with conservative management, including lubricating drops, UV protection advice, and regular review.
Surgical removal is generally indicated when:
- The pterygium is causing persistent or worsening symptoms that are not controlled by lubricating drops.
- It is approaching or entering the visual axis.
- Induced astigmatism is affecting best-corrected visual acuity.
- The growth is progressing in size at a rate that suggests it will become more difficult to remove if left longer.
- The cosmetic appearance is significantly distressing to the patient.
- There is a suspicious concern for a mimicking disease, such as a skin cancer on the eye (ocular surface squamous neoplasia)
Early removal, when the pterygium is smaller and the cornea less distorted, is generally associated with better visual outcomes. Waiting until a pterygium is advanced does not confer any clinical advantage — and may make surgery more complex and outcomes less reliable.
Pterygium Surgery at The Vision Surgeon
Dr. Rylan Hayes performs his signature no-stitch pterygium surgery using conjunctival autograft – currently the gold standard technique – secured with fibrin glue. The procedure involves the complete removal of the pterygial tissue followed by transplantation of healthy conjunctival tissue from a healthy section of the same eye, secured with tissue adhesive rather than sutures for a more natural and comfortable recovery. Full details are available on the No-Stitch Pterygium Surgery page.
Prevention: What Every Sunshine Coast Resident Should Know
The most effective thing any Sunshine Coast resident can do for their long-term eye health is to treat UV protection as seriously as sunscreen. The evidence is clear that sunglasses with UV400 protection significantly reduce the risk of pterygium development (along with other conditions), with a meta-analysis reporting a protective odds ratio of 0.47 — meaning consistent sunglass wearers have roughly half the risk of pterygium compared to those who do not wear them regularly.
Practical protective measures include:
- Wearing wraparound sunglasses with UV400 (100% UVA and UVB) protection whenever outdoors — including on overcast days, when UV remains significant
- Using a broad-brimmed hat to reduce the amount of overhead UV reaching the eyes
- Wearing polarised lenses when near water, which also reduces reflected UV glare
- Use lubricating eye drops in dry, windy, or dusty conditions.
- Prioritizing eye protection for children from early childhood — UV damage is cumulative from birth.
It is also worth noting that regular optometry review plays an important role. Optometrists on the Sunshine Coast are often the first to identify a developing pterygium, and a timely referral to an ophthalmologist allows for appropriate monitoring and planning.
Conclusion
The Sunshine Coast’s lifestyle is a genuine asset — but it comes with real ocular risks that deserve serious attention. A pterygium is not an inevitable consequence of living outdoors, but without consistent UV protection, it is a predictable one. For those who already have a pterygium, understanding when it requires treatment — and having access to the right surgical expertise when it does — makes a significant difference to long-term visual outcomes.
Patients concerned about a growth in their eye, or experiencing the symptoms described above, can take the Pterygium Symptoms Self-Assessment Quiz as a first step, or contact The Vision Surgeon directly on 07 4515 6084 or via admin@thevisionsurgeon.au to arrange an assessment.
⚠️ All surgery carries risk. Your individual risk/benefit profile can only be discussed in person.
References
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