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To evaluate the changes in subfoveal retinal, and choroidal thicknesses (CT) in the non-treated acute and the ranibizumab-treated chronic central serous chorioretinopathy (CSCR) patients.This retrospective study included 32 eyes of 32 consecutive patients with CSCR. There were 12 patients who presented with a spontaneous resolution of CSCR (Group 1) and 20 patients who were treated with ranibizumab for persistent subretinal fluid (SRF) (Group 2). Optical coherence tomography (OCT) imaging of subfoveal retinal thickness and enhanced depth imaging OCT of CT at subfoveal; at nasal and temporal 500 μm (T500); at nasal and temporal 1500 μm (T1500) were analyzed. The Student t test and multivariate analysis were used to compare variables within and between groups, respectively and correlations were analyzed using Pearson correlation coefficient. A P value of P < .05 was accepted as significant.The mean patient age was 38.94 ± 8.41 years (range, 20–53 years). Female/male ratio was 4/28. The mean duration of follow-up was 21.6 ± 8.2 months in the chronic CSCR group. Visual acuity improved and central foveal thickness (FT) decreased significantly in both groups. CT decreased significantly only at nasal 1500 μm (N1500) in the acute group and at all measured points in the chronic group compared with baseline, except at T500 (P= .07). No significant difference in central FT was detected between the 2 groups. Compared with the acute group, baseline subfoveal CT was significantly higher in chronic patients. There was a significant difference between the groups in baseline and final CT at T500. No significant difference was found at T1500. At nasal 500 μm and N1500, the difference between the groups was significant only for final CT values.Chronic CSCR was associated with higher baseline CT values in the subfoveal region and at T500. CT significantly decreased at most of the measured points in ranibizumab-treated chronic CSCR patients, whereas it significantly decreased only at 1 point in spontaneously resolved acute CSCR patients.