A patient using contact lens develops corneal infection. Laboratory diagnosis of acanthamoeba keratitis was established.The following is the best drug for treatment-: (A) Propamide, (B) Neosporine, (C) Ketoconazole, (D) Polyhexamethylene biguanide
Answer is D. Polyhexamethylene biguanide PHMB (Drug of choice) Chlorhexidine is an alternative