<prompt> The histology of pterygium includes -Elastotic degenerationEpithelial inclusion bodiesPrecancerous changesd Squamous metaplasia of the epithelium  <response>: Pathologically pterygium is a degenerative and hyperplastic condition of conjunctiva. The subconjunctival tissue undergoes elastotic degeneration and proliferates as vascularised granulation tissue under the epithelium, which ultimately encroaches the cornea. The corneal epithelium, Bowman;s layer and superficial stroma are destroyed. ref: A K KHURANA OPHTALMOLOGY,E4, Page-80 