Conjunctival intraepithelial neoplasia is a spectrum of abnormal growth of atypical squamous epithelial cells of the conjunctiva ; graded based on thickness of epithelial involvement Pterygium is a frequent, degenerative ocular surface lesion, characterized by invasion of the cornea by a fibrovascular tissue originating from the bulbar conjunctiva Eye - Conjunctiva : primary acquired melanosisSee also benign melanosis 11% of conjunctival melanocytic proliferations (Arch Pathol Lab Med 2010;134:1785) Called melanoma in situ by some, although cases without atypia don't progress (Mod Pathol 1991;4:253) Variable biologic behavior from benign to locally spreading to malignant Usually ages 40+ years, whites Presents as gradual appearance of golden brown pigmented lesion of bulbar conjunctiva May be associated with Addison disease May be ... Epibulbar choristoma is a congenital benign tumor, composed of mature tissues of ectodermal and mesodermal origin usually located at the junction between the cornea and conjunctiva
