Purpose: To analyze quantitative differences in choroidal morphology between acute and persistent central serous chorioretinopathy (CSC) using multimodal images.
Methods: Ultra-widefield indocyanine green angiography (UWICGA) and optical coherence tomography (OCT) images of 72 eyes of 72 patients with acute (32 eyes) and persistent (40 eyes) CSC were collected. Choroidal thickness, area, vessel density, symmetry, and intervortex anastomosis were assessed.
Results: The choroidal area on OCT B-scan images was smaller and the choroidal vessel density on UWICGA images was lower in the persistent group (P < 0.001 and P = 0.028, respectively). Choroidal vessel density on UWICGA showed positive correlation with that of vortex ampullae (all P ≤ 0.046). The constitution of the intervortex anastomosis and dominant vessels in the macular area showed differences between the groups (P = 0.014 and P = 0.010, respectively), with greater inferonasal vessel participation in the anastomosis and combined supero- and inferotemporal vessels as dominant vessels in the persistent groups.
Conclusions: Acute and persistent CSC differed in subfoveal choroidal area, choroidal vessel density, intervortex anastomosis constitution on UWICGA images. Choroidal vessel density on UWICGA images correlated with that of vortex ampullae. These findings enhance our understanding of the pathophysiology of CSC subtypes.