Often confused with a pinguecula, a pterygium is a growth of white tissue from the conjunctiva, or white of the eye, that protrudes into the cornea.
Pterygiums are non-cancerous but, unlike pingueculas, can obstruct light entering the eye if allowed to progress. Again, should a pterygium be unsightly or affect vision, it can be removed surgically. Your eye care practitioner will advise you accordingly.
If the wearing of contact lenses is affected by a pterygium, the fitting may be altered to alleviate any symptoms.