This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Inflammations of the Cornea, Subject name: Ophthalmology
Which of the following antibiotics can be used in the treatment of fungal keratomycosis? 
Select and explain. 
A. Silver sulfadiazine, B. Linezolid, C. Vancomycin, D. Doxycycline
A: Silver sulfadiazine
Answer: A: Silver sulfadiazine 
Explanation: Ans. a. Silver sulfadiazine (Ref: Clinical Pharmacology by Jill E. Maddison. Stephen W. Page, David Church/p567)Silver sulfadiazine can be used in the treatment of fungal keratomycosis.'There are three main groups of ocular antifungal agents- polyene antibacterials , pyrimidines and imidazoles. Other drugs used to treat fungal infections include iodine and silver sulfadiazine.'- Clinical Pharmacology by Jill E. Maddison, Stephen W. Page, David Church/p567