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要約 目的:内境界膜剝離の有無が,黄斑円孔に対する硝子体手術の成績に及ぼす影響の報告。対象と方法:硝子体手術を行ったstage 2黄斑円孔60例60眼を対象にした。1施設による31眼ではインドシアニングリーン染色による内境界膜剝離を行い,他の1施設による29眼では行わなかった。視力はlogMARで評価した。結果:初回手術による円孔閉鎖は,内境界膜剝離群31眼,非剝離群26眼で得られ,両群間に有意差はなかった。初回閉鎖後の視力は,0.2以上の改善が内境界膜剝離群の77%,非剝離群の96%で得られ,後者で有意に改善した(p=0.046)。初回閉鎖が得られた症例の最終平均視力は,内境界膜剝離群よりも非剝離群が有意に良好であった(p=0.002)。結論:Stage 2黄斑円孔に対する硝子体手術では,視力の経過に関しては,インドシアニングリーン染色による内境界膜剝離を併用しないほうがよい可能性がある。
Abstract. Purpose:To evaluate the effect of peeling of internal limiting membrane(ILM)on the outcome of vitreous surgery for idiopathic macular hole. Cases and Method:This comparative study was made on 60 eyes of 60 patients who received vitreous surgery for stage 2 macular hole in two institutions. ILM peeling using indocyanine green(ICG)was performed in 31 eyes operated in one institution. No ILM peeling was performed in 29 eyes operated in the other institution. Visual acuity was evaluated in terms of logMAR. Results:Primary macular hole was obtained in 31 eyes that received ILM peeling and in 26 eyes that did not. The difference was not significant. Visual acuity improved by 0.2 or more in 77% of eyes that received ILM peeling and in 96% that did not. The difference was significant(p=0.046). In eyes with closed macular hole,average of final visual acuity was significantly better in eyes without than those with ILM peeling(p=0.002). Conclusion:Visual outcome may be better without ICG-assisted ILM peeling after vitreous surgery for stage 2 macular hole.
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