
Fort Lauderdale, FL-In a comparison of the comfort of two non-steroidal anti-inflammatory drug (NSAID) formulations, ketorolac tromethamine ophthalmic solution 0.4% with benzalkonium chloride (BAK) (Acular LS, Allergan) seemed to be as comfortable as preservative-free ketorolac tromethamine ophthalmic solution 0.5% (Acular PF, Allergan) based on ratings by 45 healthy volunteers who received two doses of the drops in a randomized, investigator-masked, single-center clinical trial
