Pterygium should be removed because it might lead to loss of eye sight in future. This risk can become reality if the pterygium is not removed and it grows to cover the central area of the cornea. Other symptoms can be redness or the discomfort of the eye which cannot be treated by the surgery. In fact, it is easier to threat those and the treatment methods are simpler as well like using the lubricant type of eye drops. There is no other great risk associated with the pterygium removal surgery