光干渉断層計で測定した後房型有水晶体眼内レンズ術後の網膜厚と脈絡膜厚変化

Changes in retinal and choroidal thickness following collimer lens implantation measured by optical coherence tomography

要約　目的：後房型有水晶体眼内レンズ（ICL）術後早期の網膜厚と脈絡膜厚の変化を前向きに検討した。

対象と方法：光干渉断層計で測定した24例47眼の中心窩網膜厚と中心窩下脈絡膜厚の変化を統計解析した。

結果：術前/1日/1週/1か月の平均中心窩網膜厚は，248.5±28.9/246.6±28.9/247.5±26.3/248.7±30.0μm，平均中心窩下脈絡膜厚は，214.3±79.6/215.2±82.2/215.3±78.6/215.4±77.9μmで，いずれも術前後に有意な変化はなかった。

結論：ICL挿入術は術後早期の黄斑部形態変化を生じず，低侵襲な内眼手術であることが示唆された。

Abstract　Purpose：To evaluate morphological changes of foveal retina and choroid after implantable collamer lens（ICL）implantation for myopic eyes.

Methods：Foveal retinal thickness and subfoveal choroidal thickness of 47 eyes of 24 patients were measured with spectral-domain optical coherence tomography to compare early postoperative values with the baseline.

Results：Mean foveal retinal thickness were 248.5±28.9/246.6±28.9/247.5±26.3/248.7±30.0 μm at the baseline, 1 day, 1 week and 1 month, and mean subfoveal choroidal thickness were 214.3±79.6/215.2±82.2/215.3±78.6/215.4±77.9 μm respectively. Each postoperative value showed no statistical change from the baseline（Bonfferoni/Dunn test）.

Conclusion：ICL implantation lead to no morphological changes in thickness of the foveal retina and choroid for at least 1 month.