Anti-reflux surgery, commonly known as fundoplication, is a surgical procedure designed to address gastroesophageal reflux disease (GERD). During this surgery, the upper part of the stomach is wrapped around the lower esophagus to strengthen the lower esophageal sphincter (LES). The objective is to create a barrier that prevents the backward flow of stomach acid into the esophagus, alleviating symptoms of GERD such as heartburn and regurgitation.