目的：观察玻璃体切割术后视网膜下过氟化碳液体(PFCL)残留及处理。

方法：对6例PFCL视网膜下残留病例行手术取出，术后观察最佳矫正视力、OCTA下视网膜脉络膜血流情况。

结果：所有观察病例中直径大于1/5PD及距黄斑中心凹2PD范围内的视网膜下PFCL均完全取出，黄斑复位良好，视力有不同程度提高； 2例在术前、术后行PFCL相应部位OCTA扫描，结果显示PFCL处视网膜浅层血流变化较小，视网膜深层血流消失，脉络膜血流信号根据视网膜下PFCL残留量多少而表现不同。

结论：视网膜下较大的PFCL残留可以通过手术取出，黄斑外小的PFCL可长期观察； OCTA有助于观测视网膜下残留PFCL的大小和形态，分析病变区视网膜、脉络膜的部分结构和功能信息。

METHODS: Six cases of subretinal PFCL residual cases were surgically removed. Before and after operation, we assessed best corrected visual acuity(BCVA)and optical coherence tomography angiography(OCTA)features of retina and choriocapillaris.

RESULTS: Subretinal PFCL in the range of more than 1/5PD in diameter and 2PD in the fovea were completely removed in all cases, macular was reattached and visual acuity was improved in varying degrees. The OCTA features of two patients showed that the changes of blood flow in the superficial retina of the PFCL were small, the deep inner retinal layers blood flow disappeared, and the choriocapillaris signal were different according to the quantity of PFCL bubble.

CONCLUSION: Large PFCL bubble can be removed surgically, and small PFCL outside the macula can be observed for a long time. OCTA is helpful to observe the size and morphology of retained subretinal PFCL, and to analyze the structure and function of the retina and choroid in the lesion.