Surgery is minimally invasive and takes roughly 20-30 minutes. The pterygium is first carefully peeled, then a tissue graft is harvested from beneath your upper eyelid and placed over the removal site to reduce the chance of recurrence. The graft is usually secured with tissue glue and rarely needs sutures.
Proponents of functional foods say they promote optimal health and help reduce the risk of disease. A familiar example of a functional food is oatmeal because it contains soluble fiber that can help lower cholesterol levels. Some foods are modified to have health benefits.
1 Foods with soluble fiber include oatmeal, nuts, beans, lentils, apples and blueberries.  Insoluble fiber, which does not dissolve in water, can help food move through your digestive system, promoting regularity and helping prevent constipation. Foods with insoluble fibers include wheat, whole wheat bread, whole grain couscous, brown rice, legumes, carrots, cucumbers and tomatoes.