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要約 目的:広義の原発開放隅角緑内障に対するレボブノロール単独点眼の継続使用による眼圧と視野に及ぼす効果の報告。対象と方法:過去20か月間に0.5%レボブノロール点眼を新規に処方された患者25例25眼を対象とした。男性10例,女性15例であり,年齢は30~77歳(平均61歳)であった。原発開放隅角緑内障が1眼,正常眼圧緑内障が24眼であり,眼圧は12~24mmHg(平均16.2±3.0mmHg)であった。点眼開始から3,6,12か月後に眼圧とHumphrey視野計による視野を測定した。結果:点眼開始から12か月後の眼圧は14.3±2.0mmHgであり,それまでのすべての時点で眼圧は有意に下降した(p<0.0001)。視野のMD(mean deviation)とPSD(pattern standard deviation)は,点眼前と12か月後で変化がなかった。点眼の継続使用率は,6か月後で96%,12か月後で88%であった。結論:広義の原発開放隅角緑内障に対する12か月間のレボブノロール点眼では,約90%の症例が点眼を継続し,眼圧は有意に降下し,視野は変化しなかった。
Abstract. Purpose:To report the effect of long-term instillation of levobunolol for primary open-angle glaucoma on intraocular pressure(IOP)and visual field. Cases and Method:This retrospective study was made on 25 eyes of 25 patients who were prescribed with 0.5% levobunolol during a 20-month period. The series comprised 10 males and 15 females. IOP ranged from 12 to 24mmHg, average 16.2±3.0mmHg. One eye was diagnosed with primary open-angle glaucoma and 24 eyes with normal-tension glaucoma. IOP and visual field by Humphrey perimeter were measured 3, 6 and 12 months after start of treatment. Results:IOP averaged 14.3±2.0mmHg after 12 months of treatment. IOP was significantly lower at 3, 6, and 12 months of instillation(p<0.0001). There was no difference in visual field before and after 12 months of instillation regarding mean deviation(MD)or pattern standard deviation(PSD). Levobunolol instillation was continued according to protocole in 96% of cases at 6 months and in 88% at 12 months. Conclusion:Instillation of levobunolol for 12 months resulted in significant IOP decrease, no change in visual field, and in 88% of patients' compliance.
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