This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cornea, Subject name: Ophthalmology
[{'content': 'Satellite nodule on a corneal ulcer is seen due to \nSelect and explain. \nA. Fungal infection, B. Bacterial infection, C. Viral infection, D. Protozoal infections', 'role': 'user'}, {'content': 'Answer: A \nExplanation: (Fungal infection) (100- Khurana 4th)FUNGAL - KERATITIS - caused by filamentous fungiSign.* It is dry looking grayish- white with elevated rolled out margins* Delicate feathery finger like extension are present into the surrounding stroma under the intact epithelium* A sterile immune-ring (yellow line of demarcation) may be present* Multiple small satellite lesions may be present around the ulcer* Usually a big hypopyon unlike bacterial ulcer may not be sterile and the fungi can penetrate into the anterior chamber without perforation* Perforation in mycotic ulcer is rare but can occure* Corneal vascularization is consipicusly absent', 'role': 'assistant'}]