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目的:選択的レーザー線維柱帯形成術の2年以上の成績と,術前の眼圧日内変動と術後成績との関連の報告。対象:開放隅角緑内障21例33眼を対象とした。内訳は正常眼圧緑内障9眼,原発開放隅角緑内障24眼で,年齢は47~83歳,(平均65歳)である。術前眼圧は11~27mmHg(平均17.4±4.2mmHg)であった。方法:線維柱帯形成術には波長532nmのレーザーを使用し,隅角の下方半周を照射した。結果:最終観察時の眼圧下降幅は2.8±3.3mmHg,房水流出圧の改善率は18.5±64.1%であった。Kaplana-Meier法による6か月生存率は71.6%,12~24か月は62.6%であった。眼圧の日内変動パラメータと術後成績には関連がなかった。結論:正常眼圧緑内障と原発開放隅角緑内障に対し,選択的レーザー線維柱帯形成術で眼圧下降が得られた。
Purpose:To report the long-term outcome of selective laser trabeculoplasty and to evaluate its correlation with preoperative circadian intraocular pressure(IOP). Cases:We reviewed 33 eyes of 21 patients. The series comprised primary open-angle glaucoma 24 eyes and normal-tension glaucoma 9 eyes. Their age ranged from 47 to 83 years,average 65 years. Baseline IOP ranged from 11 to 27 mmHg,average 17.4±4.2 mmHg. Method:Trabeculoplasty along 180°of circumference was performed with laser beam of 532 nm in wavelength. Cases were followed up for 2 years or longer. Results:At the final observation,IOP decreased by 2.8±3.3 mmHg. Outflow pressure improved by 18.5±64.1%. Success rate was 71.6% after 6 months and 62.6% after 12 to 24 months of treatment. Circadian IOP was not significantly correlated with rate of success. Conclusion:Selective laser trabeculoplasty induced decreased IOP in eyes with normal-tension or primary open-angle glaucoma.
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