Conbercept (Chengdu Kanghong Biotech Co., Ltd., Sichuan, China) is a type of anti-VEGF agent, which has been widely used for curing patients with age-related macular degeneration (AMD) and macular edema and has been reported to be an effective adjunct when injected before vitrectomy for PDR [15]. This evidence concerns the gene VEGFA and age-related macular degeneration.