purpose: to explore any association between human papilloma virus (hpv) infection and ocular surface squamous neoplasia. methods: forty pathological specimens including 20 cases of conjunctival intra-epithelial neoplasia grade i (cin i) and 20 cases of cin iii and invasive squamous cell carcinoma (scc) together with 20 pterygium samples (controls) were analyzed by polymerase chain reaction (pcr...
