Which of the following is the drug of choice of treatment of corneal ulcers caused by filamentous fungi?

"The drug of choice for filamentous infections is natamycin and amphotericin B (0.15%) is the drug of choice for candida". ___ Atals of clinical ophthalmology "Polyene antifungals, natamycin (5%) and amphotericin B (0.15-0.25%) are the most commonly used drugs". ____ Ocular therapeutics "Treatment by means of local natamycin and amphotericin B drops, and miconazole ointment, these are effective against Aspergillus and fusarium (filamentous fungi)".