Glaucoma is a blinding eye disease with pathologically high or normal intraocular pressure combined with damage to the optic papilla and optic nerve and visual field changes. The prevalence of primary glaucoma in China is 0.21-1.75%, 1.40% for people over 40 years old, and 5.31-21.00% of all blind people are blind due to glaucoma, which shows the seriousness of glaucoma and the importance and urgency of its prevention and treatment. Primary glaucoma is clinically divided into two categories: closed-angle glaucoma and open-angle glaucoma: I. What is closed-angle glaucoma? Closed-angle glaucoma, also known as acute glaucoma, is a systemic pathological change caused by narrowing and occlusion of the anterior chamber angle, resulting in increased intraocular pressure, and then optic nerve damage and visual field defects, with clinical manifestations of sudden eye distention at night with headache, nausea and vomiting, and iris vision. If not diagnosed and treated in time, the patient will go blind within a few days. What is open-angle glaucoma? The cause of open-angle glaucoma, also known as chronic simple glaucoma, is still unclear, but most experts believe that it is caused by the degeneration of the trabecular meshwork-schlemm canal system, resulting in obstruction of atrial outflow. It often causes irreversible changes in the optic nerve papillae and visual field, but early central vision is not impressed, so it is generally not easy for patients to detect early, and the consequences are often more serious. This kind of glaucoma is mostly seen in young and middle-aged patients, accounting for one-fifth of primary glaucoma. How to achieve early detection and early diagnosis? The common characteristic of all glaucoma is the damage to vision, visual field and optic nerve, the difference is that closed angle glaucoma destroys the central vision, …… while open angle glaucoma destroys only the peripheral visual field at the beginning, and finally in the destruction of the central vision (tubular field), the patient may not feel anything in the early stage, and when it is found too late to restore vision. In our clinical work, we have encountered many young and middle-aged patients, and even teenagers, who feel sorry for their disability and blindness due to missed treatment. In fact, to achieve early detection is not difficult, you can exchange cover one eye in daily leisure time, carefully observe the near and far objects as well as the upper and lower left and right field of vision range, if one eye food is unclear or the field of vision shrinkage, should promptly go to the condition of ophthalmology for relevant examination, examination items generally include visual acuity, visual field, intraocular pressure, atrial angle and fundus, etc.. This will enable early detection and early diagnosis. Fourth, how to treat glaucoma? It is generally accepted in the ophthalmology field that surgery should be chosen as the main treatment for closed-angle glaucoma, and surgery should also be chosen for open-angle glaucoma if the progress of the disease cannot be controlled by medication or if the patient cannot take the medication on time.