A pterygium is a fibrous proliferation of the outside coating of the eye (conjunctiva). It is not dangerous but may look unsightly. It is usually caused by long term exposure to UV radiation from the sun.
If pterygia are small and not causing discomfort they can be safely monitored.
Indications for surgical removal include recurrent inflammation, a persistent red eye, visual disturbance or unsatisfactory cosmesis.
Various surgical techniques have been tried. The current technique involves removal of the pterygium and then placing a conjunctival auto-graft in its place. This means that a small area of the patient’s own conjunctiva is used to fill the space where the pterygium once was.
It is usual for there to be significant post-operative discomfort. Oral pain relief is required and there will be an extended use of eye drops for up to 3 months after the surgery.
