When the conjunctiva or mucous membrane of the eye grows excessively and covers the white part of the eye, a disease called pterygium occurs. Pterygium surgery is a procedure in which non-cancerous fibers of the conjunctiva are removed and regrowth of the conjunctiva is suppressed using glue or sutures. Pterygium operation is one of the most common types of eye operation, although this operation has slightly different conditions from other types of eye operation, because most of the time, the pterygium does not need to be operated and does not cause a problem in your vision. If you have pterygium, you should see an ophthalmologist so that your condition is under control. Although pterygium does not cause any problems for you, if you have other eye diseases, you should be diligent in its treatment.