This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Ophthalmology
Hypopyon in a fungal corneal ulcer contains? 
Select and explain. 
A. Fungal filaments, B. Fungal spores, C. Purulent material, D. Sterile material
A: Fungal filaments
Answer: A: Fungal filaments 
Explanation: Ans. is 'a' i.e., Fungal filaments Hypopyon in fungal ulcer is not sterile as in bacterial corneal ulcer because the fungi penetrate in the anterior chamber without perforation. Hypopyon in fungal ulcer is fixed and does not show positional variation as in bacterial corneal ulcer as the fungal filaments adhere to the walls of anterior chamber.