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要約 目的:Lamellar hole-associated epiretinal proliferation(LHEP)を伴う分層黄斑円孔に対し,embedding techniqueを用いた硝子体手術を行った症例を報告する。
症例:76歳,女性。初診8年前より右眼の分層黄斑円孔に対し経過観察されていた。右眼の視力低下が進行したため,手術目的に当科を紹介され受診した。右視力は(0.7)で,LHEPを伴う分層黄斑円孔を認めた。術前の中心窩網膜厚(CRT)は183μmで,ellipsoid zone(EZ)は不連続であった。27G白内障手術併施硝子体手術を施行した。円孔周囲に広範なepiretinal proliferationを認めたため,一部トリミングを行い,EPを翻転し円孔内に埋め込むembedding techniqueを行った。術翌日,黄斑部の組織間隙は修復されたが,埋め込みによりCRTは肥厚していた。その後,CRTは徐々に薄くなり,術後12か月で371μmとなり,不連続であったEZも回復傾向で,視力は(1.2)まで改善した。
結論:LHEPを伴う分層黄斑円孔に対するembedding techniqueでは術後網膜厚が増加しても,良好な術後視力が得られる可能性がある。
Abstract Purpose:To report a case of lamellar hole-associated epiretinal proliferation(LHEP)for which an embedding technique operation was performed.
Case:A 76-year-old woman visited our hospital because of decreasing right visual acuity. From 8 years before the first visit, a lamellar macular hole in the right eye had been followed up. At the first visit, the best corrected visual acuity(BCVA)in the right eye was(0.7). Optical coherence tomography(OCT)showed a lamellar macular hole with epiretinal proliferation(EP)in the right eye. The preoperative central retinal thickness(CRT)was 183 μm, and the ellipsoid zone(EZ)was discontinuous. We performed 27 G vitrectomy and cataract surgery for the lamellar macular hole with EP and cataract. A notable level of the EP around the lamellar hole was trimmed, and the EP was embedded into the lamellar macular hole. The day after surgery, the embedded EP stayed inside the lamellar macular hole, according to the OCT analysis. One month and 5 months after surgery, the CRT was 548 μm and 463 μm, respectively. At 12 months after surgery, the CRT reduced to 371 μm. The discontinuation of the EZ was gradually ameliorated. The BCVA in the right eye improved to(1.2)at 12 months after the surgery.
Conclusion:Good postoperative visual acuity was observed after the embedding technique for lamellar macular hole with EP was performed, despite the temporary increase in the CRT after the surgery.
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