Adult-onset foveomacular vitelliform dystrophy (AFVD) is characterized by gradually loss of vision, subretinal vitelliform macular lesions and retinal pigment epithelium (RPE) atrophy. The electrooculogram (EOG) is usually normal or reduce slightly. On optical coherence tomography (OCT), there are vitelliform substance which deposited between the photoreceptor layer and the RPE layer, and thinner outer nuclear layer above these deposits. OCT angiography can show the superficial and deep retinal capillaries plexus (DCP) above the yolk-like deposits, the choroidal capillary blood flow is reduced and the DCP blood flow is increased near macular. On indocyanine green angiography (ICG), there is choroidal neovascularization under vitelliform substance at early stage and fluorescence leakage in the corresponding retinal region at late stage. There is no effective treatment for AFVD at present, monogenic gene therapy is the most worth looking forward to. Understanding AFVD clinical manifestations, multi-mode imaging features and new advances in treatment can provide a reference for diagnosis and treatment options
ObjectiveTo observe the alterations of vascular density of superficial or deep retinal vascular plexus and the area of foveal avascular zone (FAZ) in acute central serous chorioretinopathy (CSC) eyes.MethodsThis is a retrospective study including 22 patients with unilateral CSC in acute stages. The patients were divided into group A (22 affected eyes) and B (22 fellow eyes). Twenty eyes of 20 age and gender-matched healthy volunteers (group C) were enrolled in this study. All subjects underwent optical coherence tomography (OCT) angiography examinations. The observation index included signal intensity of blood flow in choroidal capillary, vessel density and FAZ on the superficial capillary plexus (SCP) and deep capillary plexus (DCP).ResultsThe FAZ on DCP in group A was larger than that in group B and C (t=4.28, 5.57; P=0.00、0.00), but there was no significant difference of FAZ on SCP among 3 groups (t=0.28, 0.80; P=0.78, 0.43). The vessel density of SCP and DCP in group A and B were decreased than those in group C (t=−4.40, −2.91; P=0.00, 0.00). The type of choroidal capillaries dilation had two different manifestations by OCTA, which was circumscribed in 12 eyes and diffuse in 10 eyes. The subretinal fluid in macular area which presented dark chamber with weak reflection was observed by en-face OCT.ConclusionsThe vessel density of SCP and DCP in both eyes of acute CSC are lower than those in normal eyes. The FAZ of DCP in affected eyes of acute CSC is larger than that in fellow eyes and normal eyes. The blood flow of dilated choroidal capillary can be manifested as different morphological enhancements.