Pterygium
It is not a cancer but it may need to be removed if it is becoming irritable or if it is interfering with the vision. As it grows onto the cornea (the clear window if the eye) it can distort the vision by causing astigmatism or eventually grow into the line of sight.
Non-surgical management: Wearing sunglasses may slow progression of a ptergium (and reduce the likelihood of other conditions occuring such as cataract and macular damage) Lubricating eye drops are excellent for maintaining comfort when the pterygium becomes irritated Short courses of non-steroidal anti-inflammatory drops can also be useful for symptom control but steroid containing drops are not advised because of the risk of glaucoma or cataract development.
Surgical excision:
Successful pterygium surgery involves complete removal of all of the abnormal tissue and replacement with normal conjunctiva from another part of the eye.
