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要約 目的:線維柱帯切開術後の前房出血に対して粘弾性物質の使用による抑制を試み,従来の方法と比較した。
対象と方法:対象は,原発性開放隅角緑内障に対して線維柱帯切開術を施行し12か月以上経過観察した患者85名(68.8±8.2歳,男性47名,女性38名)である。40名は従来の方法で手術を施行し,45名は前房出血を抑えるように試みた。Schlemm管内に挿入したトラベクロトームを回旋する前に,前房内に1%ヒアルロン酸ナトリウムを充塡し,できる限り漏出がないように強膜弁を縫合した後に粘弾性物質を抜去した。12か月間にわたり術後経過を観察し,両群を比較した。
結果:術前および手術12か月後の眼圧は,従来群が25.7±2.8mmHg,15.3±2.9mmHg,前房出血抑制群が25.2±2.0mmHg,15.0±2.9mmHgであった(術前p=0.3,12か月後p=0.7)。両群とも全例で術中にSchlemm管切開部位から出血が認められた。術後に1mm以上の前房出血が,従来群では全例(100%)でみられたのに対して,前房出血抑制群では6眼(13.3%)であり(p<0.0001),前房出血が従来群では6.6±2.9日,前房出血抑制群では2.0±2.7日で消退した(p<0.0001)。術後高眼圧は従来群で6眼(15%),前房出血抑制群で2眼(6.7%)であった(p=0.2)。両眼ともに重篤な合併症はなかった。
結論:粘弾性物質の使用で,線維柱帯切開術後の前房出血の頻度が有意に減少した。
Abstract Purpose: To report the outcome of trabeculotomy with intraoperative use of viscoelastic material to prevent hyphema.
Cases and Method: This study was made on 85 eyes of 85 patients who received trabeculotomy for primary open-angle glaucoma. The series comprised 47 males and 38 females. The age averaged 68.8±8.2 years. Thirty-nine patients, who underwent surgery prior to January 2009, received conventional trabeculotomy. Forth-five patients, who underwent surgery later, received additional procedure to prevent hyphema by filling the anterior chamber with viscoelastic material before in-rotation of trabeculotome. The viscoelastic material was removed after suturing the scleral flap. Patients were followed up for 12 months.
Results: Intraocular pressure(IOP)averaged 25.7±2.8 mmHg in the conventional group and 25.2±2.0 mmHg in the viscoelastic group. IOP 12 months after surgery averaged 15.3±2.9 mmHg and 15.0±2.9 mmHg respectively. The differences were not significant. Anterior chamber hemorrhage developed in all eyes in both groups immediately after surgery. On the day after surgery, hyphema measuring 1 mm or more was present in all the 39 eyes that received conventional surgery and 6 eyes in the viscoelastic group. Hyphema disappeared after 6.6±2.9 days in the conventional group and 2.0±2.7 days in the viscoelastic group. The difference was significant(p<0.0001). Postoperative IOP spike developed in 6 eyes(15%)in the conventional group and in 2 eyes(4%)in viscoelastic group(p=0.0201).
Conclusion: Use of viscoelastic material during trabeculotomy resulted in significant decrease of postoperative hyphema and IOP spike.
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