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要約 目的:Baerveldt®緑内障インプラント(BGI)手術の中期成績の報告。
対象と方法:過去42か月間にBGI手術を行い,12か月以上の経過観察ができた38例41眼を対象とした。男性32眼,女性9眼であり,緑内障の内訳は,血管新生緑内障23眼,続発緑内障8眼,原発開放隅角緑内障3眼,落屑緑内障3眼,その他4眼であった。インプラントは前房挿入型21眼,経毛様体扁平部挿入型20眼であった。眼圧は術後3,6,12,18,24か月に測定した。手術が成功したと判断する基準は,術後3か月後に眼圧が5mmHg以上,21mmHg以下で,視力が光覚弁以上,追加の緑内障手術を必要とせず,眼内炎などの重篤な合併症がないこととした。
結果:平均観察期間は27.9か月で,術前の平均眼圧は36.1mmHgであった。術後24か月までの平均眼圧は,すべての測定時点で12.5〜14.0mmHgであり,術前に比べて有意に低下していた。術後に4眼が光覚なしとなり,眼内炎,前房消失,チューブへの硝子体嵌頓,前房に留置したチューブの露出が各1眼にあり,再手術が行われた。術後2年の成功率は75.3%であった。
結論:難治性緑内障に対するBGI手術は,術後2年間の評価で,眼圧コントロールがおおむね可能であった。
Abstract Purpose:To present a report on medium-term outcome and complications of Baerveldt glaucoma implant in out clinic.
Cases and Method:This retrospective study was made on 41 eyes of 38 cases who received Baerveldt glaucoma implant surgery during a 42-month period and who could be followed up for 12 months or longer. The series comprised 32 male and 9 female eyes. There were 23 eyes with neovascular glaucoma, 8 eyes with secondary glaucoma, 3 eyes with primary open-angle glaucoma, 3 eyes with exfolication glaucoma and 4 eyes with other types of glaucoma. Intraocular pressure(IOP)was measured 3, 6, 12 and 24 months after surgery. Surgery was evaluated as success when IOP was between 5 mmHg and 21 mmHg 3 months after surgery, visual acuity was light perception or better, no additional surgery was necessary, and there was no serious complication as endophthalmitis.
Results:Cases were followed up for an average of 27.9 months. IOP before surgery averaged 36.1 mmHg. Averaged value of IOP remained between 12.5 mmHg and 14.0 mmHg and was significantly lower than the presurgical value. Four eyes resulted in no light perception. One eye each showed endophthalmitis, flat anterior chamber, incarceration of vitreous in the tube and baring of the tube. All these eyes required additional surgery. Rate of success was 75.3% when evaluated 2 years after surgery.
Conclusion:Surgery with Baerveldt glaucoma implant resulted in IOP control 2 years after surgery.
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