特発性黄斑円孔術前後視力と光干渉断層計所見の関連性の検討

Correlation between findings by optical coherence tomography and visual acuity in idiopathic macular hole before and after surgery

要約　目的：特発性黄斑円孔の術前後の視力と光干渉断層計（OCT）による関連の報告。対象と方法：硝子体手術を行った特発性黄斑円孔31眼を対象とした。男性10眼，女性21眼で，年齢は51～78歳（平均67歳）であった。発症から手術までの期間は0.1～9か月（平均2.7か月）と推定された。27眼には白内障手術を同時に行った。術後1年以上の経過を追跡した。結果：術後視力は術前視力と正の相関があった。術後視力は，術後のOCTによる視神経細胞の内外節間境界線の形状と正の相関があり，円孔径と負の相関があった。結論：特発性黄斑円孔では術前の視力が良好で，円孔が小さく，術後のOCTによる内外節間の境界線が明瞭な症例では，術後視力が良好である。

Abstract.　Purpose：To report findings by optical coherence tomography（OCT）as correlated with pre-and postoperative visual acuity in idiopathic macular hole. Cases and Method：This study was made on 31 eyes of idiopathic macular hole treated by vitreous surgery. The series comprised 10 male and 21 female eyes. The age ranged from 51 to 78 years,average 67 years. Surgery was performed 0.1 to 9 months,average 2.7 months,after presumed onset. Cataract surgery was also performed on 27 eyes. Cases were followed up for 1 year or longer. Results：Positive correlation was present between visual acuity before and after surgery. Final visual acuity was positively correlated with OCT findings of borderline between inner and outer segment of visual cells. It was negatively correlated with the size of macular hole. Conclusion：Good visual acuity,small macular hole,and distinct borderline between inner and outer segment of visual cells by OCT are prognostic signs of good final visual acuity.