Moxiopt Moxifloxacin 0.5% Eye Drops 5mlMoxiopt Moxifloxacin 0. 5% Eye Drops 5ml Prescription required. Moxiopt Eye Drops contain Moxifloxacin HCl 0. 5%, a fourth generation fluoroquinolone antibiotic used in the management of bacterial conjunctivitis and other anterior segment ocular infections under ophthalmologist supervision. Active Ingredient Moxifloxacin HCl 0. 5% w v fluoroquinolone antibiotic. Inhibits bacterial DNA gyrase and topoisomerase IV, preventing bacterial DNA replication,