Masis M, et al. - This study is performed to find out if trabecular meshwork (TM) height differs between primary open-angle glaucoma (POAG) and primary angle-closure glaucoma (PACG) eyes. The outcome of this study suggests that the trabecular meshwork height is shorter in PACG patients compared to POAG patients in this clinic-based population. This outcome may provide insight into the pathophysiology of angle closure, and provide assistance for future diagnosis, prevention, and management of the angle closure spectrum of disorders.