Observation on imaging features of two types of fundus autofluorescence and spectral-domain optical coherence tomography in acute central serous chorioretinopathy

Abstract

Objective To observe the imaging features of short-wave length fundus autofluorescence (SW-AF), near-infrared fundus autofluorescence (NIR-AF)and spectral-domain optical coherence tomograph (SD-OCT) in acute central serous chorioretinopathy (CSC). Methods This is a retrospective observational consecutive case series study. Eighty-two eyes with acute CSC from 76 patients were enrolled in this study.There were 50 males (56 eyes) and 26 females (26 eyes), average age was (41.32±7.37) years old, average course of the disease was (0.47±1.73) months. The routine clinical examinations included best corrected visual acuity, slit lamp microscope, indirect ophthalmoscope, fundus fluorescein angiography (FFA), SW-AF, NIR-AF and SD-OCT. The imaging features of NIR-AF, SW-AF, SD-OCT and FFA in same eye with acute CSC were analyzed comparatively. Results SD-OCT showed retinal pigment epithelium (RPE) detachment corresponding to RPE leakage point on FFA images in all CSC eyes. RPE leakage points in all eyes corresponding to local hypo-NIR-AF, whereas corresponding to normal SW-AF. NIR-AF demonstrated the area of decreased AF corresponding to serous retinal detachment in all eyes, of which, the area of hypo-SW-AF was consistent with that of sensory retinal detachment in 75 eyes. Except for RPE leaking fluorescein in 82 eyes, FFA showed window defects corresponding to clusters of hypo-NIR-AF in 45 eyes, of which, 27 eyes showed hypo-SW-AF appearing concurrently with the locations of window defects of FFA. In 18 eyes, the extent and amount of hypo-SW-AF were less than that of hypo-NIR-AF. Conclusions There was local RPE detachment in all eyes with acute CSC. The locations of sensory retinal detachment, local RPE detachment and RPE depigmentation showed hypo-NIR-AF. The locations of sensory retinal detachment and RPE depigmentation showed hypo-SW-AF in most of acute CSC eyes. Key words: Central serous chorioretinopathy; Tomography, optical coherence; Fluorescein angiography; Diagnostic imaging