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要約 目的:特発性黄斑前膜(ERM)に対する硝子体手術後の視力安定時期と再発率について,内境界膜(ILM)剝離の有無で検討する。
対象と方法:2014年1月〜2016年12月に和歌山県立医科大学附属病院にて特発性ERMに対し白内障手術併施で硝子体手術を行い,1年以上観察できた54例54眼。今回,白内障手術併施しなかった症例は除外した。年齢は54〜87歳(平均71.0±6.9歳)。ILM剝離未施行群(未施行群)24眼,ILM剝離施行群(施行群)30眼で,術後1年間の視力が最も良好となるまでの期間(術後視力安定期間)と術後1年間のERMの再発率を後ろ向きに比較検討した。
結果:術前logMAR視力は未施行群0.36±0.19,施行群0.30±0.17。術後logMAR視力は未施行群0.08±0.16,施行群0.11±0.15。術前後での視力変化量は未施行群0.27±0.20,施行群0.19±0.19。2群間で有意差はなかった。術後視力安定期間は施行群で延長傾向であった。術後1年間の再発率は未施行群5/24例,施行群1/30例。施行群で再発率が有意に低かった(p<0.05)。
結論:特発性ERMに対するILM剝離併施でERMの再発率は低下するが,視力安定までの期間は延長する傾向がある。最終的な視力は,ILM剝離の有無で有意差はなかった。
Abstract Purpose:To report the rate of recurrence and time of visual stabilization following surgery for epiretinal membrane with or without peeling of internal limiting membrane(ILM).
Cases and Method:This study was made on consecutive series of 54 eyes of 54 cases who received vitreous and cataract surgery for epiretinal membrane in the past 3 years. The age ranged from 54 to 87 years, average 71 years. ILM was left intact in 24 eyes and was peeled in 30 eyes. Recurrence and time of visual stabilization were checked during followed-up for one year after surgery. Visual acuity before and after surgery was evaluated in terms of logMAR.
Results:There were no significant differences in visual acuity before and after surgery in eyes that received ILM peeling or not. Interval after surgery and visual stabilization appeared to be longer in eyes that received ILM peeling than not. Epiretinal membrane recurred in 5 out of 24 eyes that did not receive ILM peeling and in 1 out of 30 eyes that received ILM peeling. The difference was significant(p<0.05).
Conclusion:After surgery for epiretinal membrane, additional peeling of ILM reduced the incidence of recurrence and seemed to prolong the onset of visual stabilization. Peeling of ILM did not influence the final visual acuity.
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