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目的:ドルゾラミド1%とブリンゾラミド1%の降圧作用と使用感の検討。方法:3か月以上チモロール0.5%,ラタノプロスト0.005%,ドルゾラミド1%(3回/日)を点眼している原発開放隅角緑内障60名60眼を対象とした。40眼はドルゾラミドをブリンゾラミド(2回/日)に切り替え,ほかの20眼は従来の点眼を継続し対照群とした。両群間に,年齢,矯正視力,ハンフリー視野Md値,乳頭陥凹/乳頭比に有意差はなかった。以後2か月間,眼圧,自覚症状,他覚所見を観察した。切り替え前の眼圧は,ブリンゾラミド群が18.5±3.4mmHg,対照群が18.9±2.9mmHgであった。結果:4週と8週後の眼圧には,両群とも切り替え前の眼圧と有意差がなく,さらに8週までの全期間中,両群の眼圧間に有意差がなかった。ブリンゾラミド群では,38例(95%)が点眼回数の減少を歓迎した。結論:ブリンゾラミド1%はドルゾラミド1%と同等な眼圧下降作用を示した。ブリンゾラミドに切り替えることで点眼回数が減少し,コンプライアンスの向上が期待された。
Purpose:To compare the hypotensive effect and comfort of 1%brinzolamide and 1%dorzolamide. Methods:A total of 60 eyes of 60 patients of primary open-angle glaucoma were enrolled in a prospective single-masked clinical study. They had been receiving 0.5%timolol,0.005%latanoprost,and 1%dorzolamide for 3months or longer. In 40 patients,dorzolamide was substituted by brinzolamide. The other 20 patients continued the regimen and served as control. No significant differences were present between the two groups regarding age,corrected visual acuity,mean deviation in Humphrey perimetry,or cupping/disc ratio. The baseline intraocular pressure(IOP)averaged 18.5±3.4mmHg in brinzolamide group and 18.9±2.9mmHg in control group. Results:There were no significant differences in IOP 4 and 8 weeks after substitution in either group. No differences were present between IOP levels in the two groups up to 8 weeks of observation. In brinzolamide group,38 patients(95%)preferred brinzolamide 2. i. d. to dorzolamide 3. i. d. Conclusion:Same hypotensive effect was shown by 1%brinzolamide and 1%dorzolamide. Brinzolamide may improve compliance because of reduced frequency of instillation.
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