網膜静脈分枝閉塞症における黄斑浮腫の網膜厚と中心窩閾値との関係

Retinal thickness and foveal threshold in macular edema secondary to branch retinal vein occlusion

（B9-1-21）　黄斑浮腫を生じた網膜静脈分枝閉塞症8眼の網膜厚を光干渉断層計を用いて測定し，中心窩閾値，視力との関係を調べた。健眼に比べて増加した中心窩網膜厚量と中心窩閾値との間には有意な負の相関をみた（相関係数r＝−0.775,p＝0.02）。一方，視力との関係では相関係数r＝−0.606,p＝0.12で，中心窩閾値よりも相関は低かった。光干渉断層計は網膜静脈分枝閉塞症に伴う黄斑浮腫の網膜厚を速やかに測定でき，中心窩網膜厚は視機能を反映すると考えられた。

We evaluated 8 eyes with macular edema secondary to branch retinal vein occlusion regarding the retinal thickness, foveal threshold and visual acuity. Optical coherence tomography was used in measuring the retinal thickness. There was a negative correlation between the foveal thickness and threshold (r=0.775,p=0.02). The visual acuity was less correlated with the thickness (r=-0.606,p=0.12). The findings show that foveal thickness may serve as an indicator of visual dysfunction in macular edema secondary to branch retinal vein occlusion.