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Background   To compare the multimodal imaging findings of chronic central serous chorioretinopathy (CSC) patients who are good or poor responders to low-fluence photodynamic therapy (PDT).    Methods  Retrospective, interventional comparative study. The CSC patients who were admitted to our clinic for the first time between January 2013 and December 2015 were included in the study. Patients were treated with PDT only if they did not show any sign of resolution after at least 6 months from the initial signs of the disease. The patients who showed full or partial response to PDT after 3 months of treatment were accepted as good responders, those who did not show any sign of resolution were accepted as poor responders. The optical coherence tomography (OCT), fluorescein angiography (FA), and indocyanine green angiography (ICGA) findings were compared between the two groups.    Results  A total of 101 eyes of 101 patients were included: 76 eyes (75.2%) were considered as good responders and 25 eyes (24.8%) as poor responders. In regards to OCT and FA findings there was not a significant difference between the two groups for all of the evaluated findings (p > 0.05 for all). In regards to ICGA findings, there was a statistically difference in the percentage of intense midphase hypercyanescence (p < 0.0001).    Conclusions  The multimodal imaging findings of CSC patients were compared in regard to their PDT response. The presence of midphase hypercyanescence in ICGA seemed to be positive predictive factor for the PDT response in CSC patients.

international journal of retina and vitreous

The comparison of multimodal imaging findings of central serous chorioretinopathy patients in regard to the early anatomically treatment response to half-fluence photodynamic therapy: a retrospective case–control study