Which of the following is NOT an ocular antifungal option?

• A. Voriconazole
• B. Natamycin
• C. Miconazole
• D. Dilute betadine

Answer: (D)

The main idea is distinguishing antifungal medications from antiseptics in ocular therapy. Natamycin and voriconazole are antifungal agents used topically to treat fungal infections of the eye, with natamycin being a standard option and voriconazole a common alternative. Miconazole is another antifungal sometimes used off-label for ocular fungal infections. Dilute betadine, however, is povidone-iodine, an antiseptic that reduces overall microbial load but does not act as a dedicated antifungal agent. While it can be used to help sterilize the surface, it is not relied upon to treat fungal keratitis and can be toxic to the cornea at higher concentrations, so it’s not considered an ocular antifungal.