反应详情

Timolol maleate powder was from Merck, Sharp and Dohme (West Point, Pa.) and was dissolved in 0.5% polysorbate 80 in normal saline with 0.01% benzalkonium chloride (40 mg/ml, and 20 mg/ml, respectively). Betaxolol hydrochloride (Betoptic; Alcon, Fort Worth, Tex.) at a concentration of 0.5% (5 mg/ml) and levobunalol hydrochloride (Betagan; Allergan, Irvine, Calif.) at a concentration of 0.5% (5 mg/ml), were obtained from the pharmacy.