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PURPOSE To elucidate clinical factors related to the presence of loculation of fluid (LOF) in the posterior choroid in central serous chorioretinopathy (CSC). DESIGN Retrospective, cross-sectional study. METHODS This single-center study included 158 eyes from 158 patients with CSC who were classified into LOF and non-LOF groups. The groups were compared for age, sex, spherical equivalent, axial length, subfoveal choroidal thickness (SCT), and scleral thickness. Using swept-source optical coherence tomography (OCT), we determined the presence of LOF based on B-scan and en face images. Scleral thickness was measured 6 mm posterior to the scleral spur in four directions using anterior segment OCT. RESULTS The 158 eyes were classified into 98 eyes in the LOF group and 60 eyes in the non-LOF group. In univariable analyses, the LOF group was younger (P = .01) and had a higher male ratio (P = .03) and greater SCT (P < .001) than the non-LOF group. All scleral thicknesses at the superior, temporal, inferior, and nasal points were greater in the LOF group than in the non-LOF group (426.2 μm vs. 395.1 μm, 445.7 μm vs. 414.9 μm, 459.2 μm vs. 428.8 μm, 445.4 μm vs. 414.3 μm, all P < .05). Multivariable analyses found that SCT (odds ratio [OR]: 1.02, 95% confidence interval [CI]: 1.01-1.02, P < .001) and mean scleral thickness (OR: 1.02, 95% CI: 1.02-1.03, P = .002) were significantly associated with the presence of LOF. CONCLUSION A thick choroid and thick sclera appeared to be related to the presence of LOF in CSC.

To evaluate and compare the scleral thickness of patients with idiopathic central serous chorioretinopathy (iCSC) and steroid-induced central serous chorioretinopathy (sCSC) using anterior-segment OCT.Retrospective, comparative study.One hundred ten eyes of 110 patients with central serous chorioretinopathy.We classified the patients into iCSC and sCSC groups and compared age, sex, spherical equivalent, axial length, subfoveal choroidal thickness (SCT), and scleral thickness. We measured scleral thickness 6 mm posterior to the scleral spur in 4 directions.Scleral thickness in sCSC eyes.We enrolled 96 and 14 eyes in the iCSC and sCSC groups, respectively. The sCSC group included a greater proportion of women than the iCSC group (42.9% and 13.5%, respectively;The scleral thickness of eyes in the sCSC group was significantly thinner than that in the iCSC group. This suggests that the sclera has less involvement in the pathogenesis of sCSC than in that of iCSC.