特発性黄斑上膜に対する内境界膜切除術の評価

Evaluation of peeling of inner limiting membrane for idiopathic epiretinal membrane

　特発性黄斑上膜に対して硝子体手術を行った19眼につき，術前と術後3か月の所見を検索した。9眼では内境界膜を切除し，10眼では切除しなかった。両群間に，術前の年齢，視力，中心窩厚，多局所網膜電図（MERG）の振幅と潜時には有意差はなかった。術後3か月では，両群間に，視力，中心窩厚，MERGの潜時に差はなく，MERGの振幅のみが切除群で非切除群よりも有意に低かった。短期間の術後成績では，黄斑上膜に対する内境界膜切除の有効性は示されず，より長期の評価が必要であると結論される。

We reviewed 19 eyes of idiopathic epiretinal membrane treated by vitreous surgery. Additional peeling of inner limiting membrane (ILM) was performed in 9 eyes and not in 10 eyes. There was no significant difference between the two groups regarding age, visual acuity, foveal thickness, amplitude and implicit time by multifocal electroretinogram (MERG) prior to surgery. At 3 months after surgery, there was no difference between the two groups regarding visual acuity, foveal thickness, and implicit time of MERG. Amplitude of MERG was significantly lower in 9 eyes receiving ILM peeling than in other 10 eyes. The findings show that ILM peeling may not benefit in surgery for epiretinal membrane. A longer observation is necessary for definitive evaluation.