This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Disorders of Conjunctiva, Subject name: Ophthalmology
[{'content': 'All are false regarding ophthalmic use of topical retinoic acid except : \nSelect and explain. \nA. Conjunctival melanoma, B. Naeus or congenital moles, C. Ocular-surface squamous neoplasm, D. Pterygium', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ocular surface epithelium Squamous neoplasia (OSNN) Most common malignancy of the conjunctiva. OSSN lesions typically present as fleshy conjunctival lesions with a gelatinous, leukoplakic, or papillary appearance. Arise from the limbal stem cells. Produces symptoms as of dry eye.It can be reversed by the application of topical trans-retinoic acid ointment Retinoic acid also promotes epithelial healing. Pterygium- Topical Mitomycin C (antiproliferative ) have been used daily after pterygium surgery to reduce scarring and recurrences. Conjunctival melanoma-Once suspected, enucleation or exenteration is the treatment of choice, depending upon the extent of growth. Naevus or congenital moles- Excision indicated for cosmetic reasons', 'role': 'assistant'}]