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onths and DFAZ area one day after the operation in the RRDCD group was significant. Conclusion Choroidal lesions in RRDCD patients may have an acute pathological effect on ischaemia of the deep retinal capillary network. The DFAZ area in RRDCD patients can be used to predict and evaluate postoperative visual acuity.Purpose To investigate the risk factors associated with progressive fibrovascular proliferation (FVP) in proliferative diabetic retinopathy (PDR). Methods We retrospectively reviewed the clinical d