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  • Title: Medical control of intraocular pressure after phacoemulsification.
    Author: Dayanir V, Ozcura F, Kir E, Topaloğlu A, Ozkan SB, Aktunç T.
    Journal: J Cataract Refract Surg; 2005 Mar; 31(3):484-8. PubMed ID: 15811735.
    Abstract:
    PURPOSE: To compare the effectiveness of oral acetazolamide, topical brinzolamide 1%, and no ocular hypotensive medication after phacoemulsification. SETTING: Adnan Menderes University Department of Ophthalmology, Aydin, Turkey. METHODS: This prospective randomized double-blind study comprised 60 eyes of 52 patients having phacoemulsification under topical anesthesia. There were no intraoperative complications. Eyes were randomized to receive oral acetazolamide 500 mg 1 hour preoperatively followed by 250 mg acetazolamide every 6 hours, 1 drop of brinzolamide 1% every 12 hours starting immediately after speculum removal, or no ocular hypotensive medication. Intraocular pressure (IOP) was measured using a Perkins tonometer preoperatively and 4 to 6 hours and 18 to 24 hours postoperatively. RESULTS: The preoperative IOP was not significantly different between the 3 groups. Four to 6 hours postoperatively, the acetazolamide group (P=.002) and brinzolamide group (P=.001) had significantly lower IOP than the control group. The same trend was observed at 18 to 24 hours in the brinzolamide group (P=.001) but not the acetazolamide group (P=.018). The IOP levels were not significantly different between the acetazolamide group and brinzolamide group at any postoperative time point. No eye receiving medication and 2 eyes (10%) in the control group had an IOP of 30 mm Hg or higher 4 to 6 hours postoperatively. Compared with preoperatively, an IOP increase of more than 5 mm Hg was seen at 4 to 6 hours in 3 eyes (15%), 2 eyes (10%), and 14 eyes (70%) in the acetazolamide, brinzolamide, and control group, respectively. CONCLUSION: Brinzolamide was as effective as acetazolamide in preventing IOP elevation 4 to 6 hours after phacoemulsification and more effective than acetazolamide at 18 to 24 hours.
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