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要約 目的:裂孔原性網膜剝離に対する,20G,23G,25Gシステムによる硝子体手術の成績の評価。対象と方法:過去20か月間に初回手術として硝子体手術を行い,3か月以上の経過を追えた裂孔原性網膜剝離の連続症例103例104眼を診療録の記述に基づいて検索した。男性73眼,女性31眼である。62眼には20G,24眼には23G,18眼には25Gを用い,膨張性ガスを97%の症例で用いた。結果:手術翌日の平均眼圧値と初回復位率には3群間に有意差はなかった。術中合併症として医原性裂孔,術後の早期合併症として前房出血が生じた。結論:裂孔原性網膜剝離に対する硝子体手術では,20G,23G,25Gシステム間の手術成績に差がない。小切開手術に移行する初期では,医原性裂孔に留意する必要がある。
Abstract. Purpose:To report the outcome of vitreous surgery for retinal detachment using 20G,23G or 25G system. Cases and Method:This retrospective study was made on consecutive series of 104 eyes of 103 patients who received surgery for rhegmatogenous retinal detachment in the past 20 months and who could be followed up for 3 months or longer. The series comprised 73 male and 31 female eyes. Sixty-two eyes were treated by 20G,24 eyes by 23G,and 18 eyes by 25G system. Expansive gas was used at the end of surgery in 97% of cases. Results:There was no significant difference in the rate of retinal reattachment or in the averaged value of intraocular pressure on day 2 of surgery among the three systems. Iatrogenic retinal tear formation was the chief intraocular complication. Hyphema was the chief postoperative complication. Conclusion:There is no difference in the outcome of vitreous surgery for rhegmatogenous retinal detachment using 20G,23G or 25G system. Iatrogenic retinal tear would merit due attention during the period of transition to small-incision surgery.
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