Choriocapillaris Island: an optical coherence tomography angiography finding observed in central serous chorioretinopathy

摘要

Demonstration of the choriocapillaris island(CCI) on optical coherence tomography angiography (OCTA). a 3 × 3 en face choriocapillaris OCTA showing central diminished flow underneath the area of neurosensory detachment except for a focal area (yellow circle)showing localized detectable flow, ie: the “choriocapillaris island”. b Choriocapillaris density map of the same area showing central signal attenuation represented in blue and an inferonasal juxta foveal CCI (yellow circle). c Corresponding B scan with angio-overlay showing diminished choriocapillaris flow (between red lines) underneath sub-retinal fluid except for a focal area (yellow circle) showing signal enhancement