This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: FMGE 2018, Subject name: Ophthalmology
[{'content': 'True about pterygium \nSelect and explain. \nA. Inflammation of cornea, B. Fatty deposition of sclera, C. Conjunctival invasion making a flap over cornea, D. Dead epithelial debris accumulation', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Pterygium - Wing shapes fold of conjunctiva encroaching upon the cornea from the either side *Etiology - Hot climates - Degenerative & hyperplastic condition of conjunctiva *Symptoms - Visual disturbance (astigmatism) -Cosmetic intolerance *Sign - Triangular fold of conjunctiva mainly on nasal sideStocker line - Iron deposition on corneal epithelium *Rx-Surgical excision-recurrence chance is 30-50 %Best RX- Surgical excision with free conjunctival autograft taken from the same eye or other', 'role': 'assistant'}]