Glaucoma is a group of diseases that cause optic nerve damage and visual field damage due to increased eye pressure. Glaucoma is also a common clinical disease, which is divided into open-angle glaucoma and closed-angle glaucoma according to the opening and closing of the atrial angle. Closed-angle glaucoma is common in Chinese people, so the anatomical basis of closed-angle glaucoma is mainly the narrowing of the atrial angle. In a normal human eye, there is atrial fluid, which is produced from the ciliary process and then flows from the posterior chamber through the pupil to the anterior chamber and out through the atrial angle. Under normal circumstances, the production and discharge of atrial fluid are in a dynamic balance. If the atrial angle is narrowed, the flow of atrial fluid is impeded, and too much atrial fluid cannot flow out from the atrial angle properly, which will lead to an increase in intraocular pressure and subsequent pressure damage to the optic nerve. In general, atrial stenosis, or closed-angle glaucoma, is partly genetic and is caused by congenital anatomical abnormalities.