網膜内層に微小囊胞様変化のある特発性黄斑上膜の術後予後

Surgical outcome of eyes with idiopathic epiretinal membrane and microcystic edema in the inner retina

要約　目的：網膜内層に微小囊胞様変化がある特発性黄斑上膜眼に行った手術成績の報告。対象と方法：過去43か月間に当科で手術を行った特発性黄斑上膜56眼のうち，網膜内層に微小囊胞様変化がある18眼と，変化がない38眼とを比較した。微小囊胞の有無は光干渉断層計（OCT）による所見で決定した。術後6か月以上の経過を追跡した。結果：手術6か月後の視力は，微小囊胞がある群では，ない群よりも有意に低かった（p＝0.003）。多変量解析では，手術6か月後の視力に関係する因子は，術前の囊胞様変化の有無（p＝0.02）と，術前視力（p＜0.001）であった。結論：特発性黄斑上膜の術後視力には，網膜内層の微小囊胞様変化の有無が影響する。

Abstract.　Purpose：To report the outcome of vitreous surgery in eyes with idiopathic epiretinal membrane and microcystic edema in the inner retina. Cases and Method：This study was made on 56 eyes that received vitreous surgery for idiopathic epiretinal membrane during the past 43 months. Microcystic retinal edema was present in 18 eyes and absent in 38 eyes. Optical coherence tomography（OCT）was used to identify microcystic edema in the inner retina. Cases were followed up for 6 months or over after surgery. Results：Visual acuity 6 months after surgery was significantly poorer in eyes with microcystic retinal edema than those without（p＝0.003）. Multivariate analysis showed that following two factors were related to visual acuity 6 months after surgery：presence of microcystic retinal edema（p＝0.02）and visual acuity before surgery（p＜0.001）. Conclusion：Visual acuity after surgery for idiopathic epiretinal membrane is influenced by the presence of microcystic edema in the inner retina.