Background Several factors affect the surgical success ofَAhmed Glaucoma Valve (AGV) implantation. Choroidal detachment (CD) remains a common complication after filtering surgeries. In the present study, we aimed to investigate the effect of choroidal detachment on the success of AGV. Methods In this case-control study, patients who underwent AGV implantation and developed CD were included as a case group. A control group matched for age, sex, systemic disease, lens status, baseline IOP, glaucoma type, and the number of previous glaucoma surgeries using coarsened exact matching were also included. The patients’ data, including intraocular pressure (IOP), number of glaucoma medications, and complications, were retrospectively extracted from the patients’ records. The primary outcome was the AGV success rate 5