Auhtors: Mao Jianbo, Zhang Caiyun, Shen Lijun, Lao Jimeng, Shao Yirun, Wu Hanfei, Chen Yiqi, Tao Jiwei
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To evaluate the efficacy and safety of conbercept in patients with choroidal neovascularization secondary to chronic central serous chorioretinopathy (CSC-CNV).
A retrospective case study was performed.The medical records of 13 patients (14 eyes) diagnosed as chronic CSC-CNV in Hangzhou Branch of Eye Hospital of Wenzhou Medical University from September 2015 to January 2018 were collected.All the study eyes received intravitreal injection of conbercept (0.05 ml/0.5 mg) under one intravitreal injection and pro re nata (PRN) treatment.The best corrected visual acuity (BCVA) and central macular thickness (CMT) before initial injection and 1 week, 1 month, 2, 3 and 6 months after initial injection were measured and analyzed.This study followed the Declaration of Helsinki and written informed consent was obtained from each patient before initial injection.The study protocol was approved by the Ethics Committee of Hangzhou Branch of Eye Hospital of Wenzhou Medical University (No.2019-029-K-28).
During the 6-month follow-up, the mean administration times was 1.93±0.83, and all the CNV secondary to CSC did not grow outside the retinal pigment epithelium layer.The BCVA values before initial injection and 1 week, 1 month, 2, 3 and 6 months after initial injection were 0.51±0.32, 0.43±0.34, 0.36±0.35, 0.31±0.28, 0.27±0.29 and 0.26±0.30, respectively, with a significant difference among different time points (F=21.225, P<0.05). The BCVA values at each time point after initial injection were significantly better than that before initial injection (all at P<0.05). The CMT values before initial injection and 1 week and 1 month, 2, 3, 6 months after initial injection were (299.07±132.90), (216.50±70.94), (203.00±61.87), (234.29±95.70), (194.21±46.46) and (207.43±55.46) μm, respectively, and the difference was statistically significant among different time points (F=3.768, P<0.05). The CMT values at each time point after initial injection were significantly better than that before initial injection (all at P<0.05). No severe treatment complications were observed during the follow-up period.
Intravitreal injection of conbercept is safe and can effectively reduce the CMT and improve BCVA of chronic CSC-CNV patients in the short term.