Long-term follow-up of half-fluence photodynamic therapy in acute central serous chorioretinopathy

Summary Background To evaluate the long-term results of indocyanine green angiography(ICGA)-guided verteporfin (Visudyne®, Novartis, Basel, Switzerland) photodynamic therapy (PDT) with half-fluence rate in the treatment of acute symptomatic central serous chorioretinopathy (CSC). Material and methods A retrospective review was performed of 12 patients with acute symptomatic CSC verified by spectral-domain optical coherence tomography (SD-OCT) and fluorescein angiography (FA), treated with ICGA-guided verteporfin (6 mg/m 2 )-PDT with half-fluence rate (25 J/cm 2 ). The vision-related quality of life (VR QOL) 25-Item National Eye Institute Visual Function Questionnaire (VFQ-25) was completed by all patients and 82 controls. Results Best corrected visual acuity (BCVA) at baseline was 77.5 (±10; n = 12) according to the Early Treatment Diabetic Retinopathy Study (EDTRS) letter score and changed to 89 letters (±9.9; p = 0.0003) at long-term follow-up (83.8 ± 4.8 months after PDT). Baseline contrast sensitivity (CS) was 29.5 ± 4.5 Pelli–Robson letters and increased to 34.5 ± 4.5 letters at long term ( p