Pterygium. Pterygium:very common, abnormal growth of clear covering (conjunctiva) of white part of the eye (sclera) over the cornea (window of the eye). If severe and causing discomfort or red, it can be removed with surgery. It is generally benign. It is due to excess sun/UV exposure usually. Prevention is only remedy. Avoid sun (sunglasses, hat); avoid smoking. Steroid/other meds help symptoms: not cure.
What is happening. Pterygia (plural of pterygium) are usually without symptoms. What problem are you having?