In Pterygium Surgery, the abnormal tissue is removed from the cornea and sclera (white part of the eye).
Eyedrops are used to anesthetize the surface of the eye, after which a small device is inserted to hold the eyelids apart. An anesthetic is given.
No sutures are required usually. An eye patch is generally worn for two days. The eye may be red for about two weeks, but ultimately there is almost no scar. If pterygia are present in both eyes, the second eye is operated on at least one week after the first.
Chalazion will often disappear without treatment within a month or so. If one continues to enlarge, it may need to be surgically removed using local anesthesia. This is usually done from underneath the eyelid to avoid a scar on the skin. Antibiotic eye drops are usually used several days before and after removal.