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목적 : To assess the change in subfoveal choroidal thickness (SFCT) in central serous chorioretinopathy (CSC) following spontaneous resolution and low fluence photodynamic therapy (PDT) using the enhanced depth imaging optical coherence tomography (EDI-OCT).
방법 : A total of 36 consecutive eyes of 36 patients were included in this retrospective study; 16 eyes with spontaneously resolved CSC and 20 eyes with PDT treated CSC. Best-corrected visual acuity and SFCT were evaluated at each visit until complete absorption of the subretinal fluid. SFCT of 32 normal subjects were also measured, as the control group. Wilcoxon singed rank test was used to evaluate the effects of spontaneous resolution and PDT. To compare the SFCT of the eyes with resolved CSC, with that of the normal eyes, Mann-Whitney U test with Bonferroni correction was also employed.
결과 : SFCT of patients was 459.16±77.50 (㎛) at the baseline, and decreased to 419.31±54.49 (㎛) after a spontaneous resolution (P=0.015). However, SFCT was not normalized in comparison with that of the normal subjects (P<0.001). SFCT in PDT group was also reduced from 416.43±74.01 (㎛) to 349.50±88.99 (㎛) (P<0.001), with no significant difference with the normal value (P=0.087).
결론 : SFCT in patients with CSC decreased both after spontaneous resolution and low fluence-PDT. However, only in the PDT group, after disappearance of subretinal fluid, did it decrease to that of normal subjects.
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