Background
PACG, blindness
PRIMARY ANGLE CLOSURE GLAUCOMA, BLINDNESS
Primary angle closure glaucoma (PACG) is the leading cause of irreversible blindness worldwide [LPIp is a safe and simple operation, which can effectively open the closed angle [Traditional AS-OCT uses a single cross-sectional scan, whereas swept-source AS-OCT is a new technology for anterior segment imaging. It uses a scanning laser that can quickly capture multiple images. An accurate evaluation of the angle helps to identify patients with suspected primary angle closure (PACS).In this study, we used swept-source AS-OCT to study the efficacy and safety of LPIp with different energies and locations in PAC treatment.