If you’re considering pterygium surgery at a clinic in London, it’s important to understand both the common and rare risks associated with the procedure. Here’s a clear summary of potential risks based on clinical evidence and local specialist guidance:
Common Risks and Side Effects
Recurrence: The most significant risk is that the pterygium may regrow. Recurrence rates are typically between 5–10%, but can be higher in cases of recurrent pterygium or if advanced surgical techniques aren’t used. If the growth returns, further surgery may be needed.
Subconjunctival Hemorrhage: About 35–40% of patients experience a small bleed under the surface of the eye. This usually looks like a red patch and resolves on its own within days to weeks.
Graft Edema or Retraction: Swelling or movement of the graft tissue can occur in about 20–30% of cases, but these issues often settle with time or minor intervention.
Discomfort and Redness: Pain, redness, and a gritty sensation are common in the first 24–48 hours after surgery and may persist for several days to weeks. Eye drops and painkillers help manage these symptoms.
Dry Eye: Temporary or, less commonly, persistent dryness or irritation can follow surgery, as the procedure can affect tear distribution.
Less Common Risks
Infection: As with any surgery, there’s a risk of infection. Prompt treatment with antibiotics is effective if this occurs, but untreated infection can threaten vision.
Scarring: Scar tissue may develop at the surgical site. While often mild, significant scarring can cause discomfort or, rarely, affect vision by altering the cornea’s shape (astigmatism).
Graft Loss or Sliding: In rare cases (less than 1%), the graft used to cover the excision site may shift or be lost, sometimes requiring further surgery.
Granuloma Formation: Small lumps (granulomas) can develop at the surgical or donor site, but these are uncommon and usually resolve or can be treated.
Corneal or Scleral Complications: Very rarely, severe complications such as corneal melt, ulceration, or perforation can occur, especially in high-risk or repeat surgeries. These may require intensive treatment or, in extreme cases, corneal transplantation.
Other Considerations
Vision Changes: While surgery is intended to improve or preserve vision, complications like scarring, infection, or corneal changes can, in rare cases, impair vision.
Cosmetic Outcome: Most patients are satisfied with the cosmetic result, but a faint white scar or subtle changes in blood vessel patterns may remain.
How Risks Are Minimized
London clinics use advanced techniques (such as conjunctival autografting and fibrin glue) to reduce recurrence and complications.
Surgeons will assess your individual risk factors and discuss them with you before surgery.
Careful post-operative care, including prescribed eye drops and follow-up visits, further reduces the risk of complications.
In summary:
Pterygium surgery in London is generally safe and effective, but risks include recurrence, bleeding, discomfort, infection, scarring, and, very rarely, more serious eye complications. Choosing an experienced surgeon and following all aftercare instructions will help minimize these risks and support a smooth recovery.