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. Natural rx info: see eyedoc2020.blogspot.com.
Conjunctival growth. This is a benign conjunctival growth most commonly on the nasal side of the eye (s) but can also be on the temporal side. Most are slow growing in response to dust, wind and sunlight. Some get quite red and irritated and a few overgrow the cornea and threaten the vision. Your ophthalmologist can remove these if needed.
Yes. Yes. A pterygium is an overgrowth of tissue from the conjunctiva onto the cornea caused by exposure to ultraviolet light.