Association of Subretinal Fluid Duration and Baseline Chorioretinal Structure With Optical Coherence Tomography in Central Serous Chorioretinopathy.

Abstract

This study investigated the association between subretinal fluid (SRF) duration and baseline chorioretinal structure in patients with naïve (first-episode and untreated) central serous chorioretinopathy (CSC). We divided 59 patients into non-prolonged (<3months) and prolonged (>3months) groups based on SRF fluid persistence from the initial visit. The follow-up period varied as the shorter duration was chosen between SRF disappearance time and 3months from the initial visit. We measured the central retinal thickness (CRT), central choroidal thickness (CCT), SRF height (SRFH), and outer nuclear layer thickness (ONL) using spectral-domain optical coherence tomography (SD-OCT) at the initial visit and recorded SRF duration. We compared these parameters between the groups, conducted multivariate analysis for SRF duration of more than 3months, and investigated the correlation among CCT and CRT, SRFH, or ONL, and among SRF duration and CRT, CCT, SRFH, or ONL. CCT was significantly thicker in the prolonged than in the non-prolonged group at the initial visit (P = 0.044) and significantly correlated with CRT and SRFH (P = 0.007, r = 0.35 and P = 0.002, r = 0.39). SRF duration significantly correlated with CRT and SRFH (P = 0.009, r = 0.40 and P = 0.003, r = 0.41). The optimal model for SRF duration more than 3months included age (P = 0.054) and CCT (P = 0.008). Thicker baseline CCT can lead to a longer SRF duration in naïve CSC. This association aids in early detection of cases at a higher risk of prolonged SRF.