白内障手術患者の中心窩下脈絡膜厚に相関する因子の検討

Factors related to subfoveal choroidal thickness in persons before cataract surgery

要約　目的：白内障患者の中心窩下脈絡膜厚（CT）に相関する因子についての検討。対象と方法：当院での白内障手術を予定した他に眼疾患のない連続した109名159眼に対し，deep range imaging optical coherence tomographyを用いてCTを計測した。そして，検討項目とCTとの相関を統計学的に解析した。結果：CTは全体平均181.0±74.5μmであった。2群に分けた検討では，眼軸長25.0mm以上と屈折値－5.0D以下の群は有意にCTが薄かった。眼軸長とCTは負の相関を示した。重回帰分析では年齢と眼軸長が有意な予測変数となった。結論：白内障手術患者のCTは，眼軸長と負の相関を認め，加齢と長眼軸は薄い脈絡膜厚の有意な予測変数であった。

Abstract.　Purpose：To report factors related to subfoveal choroidal thickness in persons before cataract surgery. Cases and Method：This study was made on 159 eyes of consecutive 109 persons prior to cataract surgery. Cases were excluded with eye diseases other than cataract. Subfoveal choroidal thickness was measured by means of deep range imaging optical coherence tomography. Results：Subfoveal choroidal thickness averaged 181.0±74.5μm. The value was significantly less in eyes with axial length greater than 25.0 mm and in those with myopia greater than －5.0 diopters. The value was inversely correlated with axial length. Age and axial length were significant predictive factors for subfoveal choroidal thickness. Conclusion：Subfoveal choroidal thickness was inversely correlated with axial length in persons prior to cataract surgery. Age and axial length were significant predictive factors for subfoveal choroidal thickness.