“…Ciprofloxacin hydrochloride (CIP) [1-cyclopropyl-6-fluoro-1,4-dihydro-4oxo-7-(piperaziny-1-yl) quinolone-3-carboxylic acid] is a broadspectrum antibiotic [1,2] which is often used jointly with dexamethasone (DEX, an exogenous steroid) [(11β,16α)-9-Fluoro-11,17,21-trihydroxy-16-methylpregna-1,4-diene-3,20-dione] in several anti-infective ophthalmic preparations to treat acute and sub acute conjunctivitis, keratitis and corneal ulcers caused by susceptible strains [3]. The same combination is used for the topical treatment of acute otitis media in pediatric patients with tympanostomy tubes and acute otitis externa in pediatric, adult and elderly patients [4].…”