What type of growth does pterygium refer to?

Pterygium refers specifically to a noncancerous growth that occurs on the cornea, typically characterized by a wing-shaped, fleshy tissue that extends over the conjunctiva and can interfere with vision if it grows large enough. This growth is often associated with prolonged exposure to UV light and environmental irritants. It is important to understand that while pterygium can cause discomfort and visual disturbances, it is not malignant or infectious, which distinguishes it from the other options provided. The focus on its classification as noncancerous helps in identifying the proper management and treatment options available for patients suffering from this condition.