What is the removal of a fibrovascular growth on the conjunctiva called?

The correct term for the removal of a fibrovascular growth on the conjunctiva is indeed pterygium. A pterygium is a benign growth that typically arises from the conjunctiva and extends onto the cornea. It is composed of fibrovascular tissue and is often associated with prolonged exposure to UV light, dust, and wind, which can lead to its development. Surgical removal is indicated when a pterygium causes discomfort, visual impairment, or cosmetic concerns.

In contrast, chalazion refers to a blocked oil gland in the eyelid, leading to a cyst-like swelling. Conjunctivitis is an inflammation of the conjunctiva, often called pink eye, but it does not involve fibrovascular growth. Blepharitis is an inflammation of the eyelid margins that can cause redness and irritation, but it is also unrelated to fibrovascular growths. Thus, pterygium is the precise term for the condition described in the question.