[Intraocular penetration of topical norfloxacin in humans. Preliminary study].

The aim of this bicentric study was to assess the intraocular penetration of topical Norfloxacin. Herein, are only reported the results from one center. Topically applied Norfloxacin 0.3% was given to patients who underwent cataract surgery. The first group received 5 drops between 7.55 A.M. to 8 A.M. and after each hour until cataract surgery. The second one received one drop each quarter from 7 A.M. until the surgery. Aqueous and sera samples were dosed using HPLC. In the first group, the aqueous average was 0.066 mg/l and 0.112 mg/l in the second group. Using a T test and Mann Whitney test, we could not find a significant difference between the two groups.