A pterygium is a benign growth in the inner corner of the eye.. It evolves very slowly and is probably triggered by long term exposure to ultraviolet rays from the sun and to dry and dusty conditions. It is common in Australia. In its early stages, it can cause irritation of the eye which will often respond to treatment with eye drops. As it grows, when it is fleshy and red in the inner corner of the eye, it can be of cosmetic concern. In more advanced cases it can grow further into the cornea and block vision.
In this case, surgery has a very high success rate of restoring good cosmetic appearance, comfort and better vision. This involves the placement of a graft of conjunctival tissue from under the eyelid which decreases the likelihood of recurrence.