About 30% of glaucoma patients are diagnosed with glaucoma only when they lose the best time for treatment and irreversible consequences due to the lack of correct diagnostic criteria for glaucoma, rather than the direct destruction of the disease causing serious visual impairment. Therefore, scientific diagnostic criteria for glaucoma play a key role in the prevention of glaucoma. Based on many years of clinical experience, we have summarized a perfect diagnostic standard for glaucoma, which has completely cured numerous patients in the budding state and prevented them from suffering from glaucoma. Clinical symptoms: Glaucoma patients have obvious systemic manifestations before the elevation of intraocular pressure and fundus changes, which are not manifested in the eyes at first, but only the appearance of persistent insomnia, migraine, habitual constipation or exertion, temporary eye distension, dryness, fatigue, haziness of vision after changes in mood fluctuations, which is relieved after rest, and only once or twice a year, with the development of the disease, the more frequent the attacks, the longer each With the development of the disease, the more frequent the attacks, the longer each attack, so repeated attacks, at any time can lead to acute grand mal. IOP: It is an important basis for glaucoma, but it is not the only basis. More than 90% of patients with glaucoma misdiagnosed clinically are wrongly taking IOP as a criterion, IOP is not necessarily not glaucoma (see: hypotensive glaucoma). High intraocular pressure is not always glaucoma either. Fundus: early stage can be normal, once the fundus changes, it means that the disease has been more serious, the course of the disease is long and has caused obvious glaucoma damage. Visual field and electrophysiology: It is important for patients with low IOP and no obvious symptoms. Some patients are asymptomatic until they become blind, their IOP is not high and no damage can be seen in the fundus, but electrophysiology and visual field have reflected the changes of the disease. Family history and related medical history: Significant family history, and systemic and local diseases have important reference value, such as myopia, trauma, ocular inflammation, cataract, hypertension, and history of diabetes mellitus are easily combined with secondary glaucoma. Therefore, for the diagnosis of glaucoma, one must have a high degree of responsibility and rich clinical experience, and cannot easily exclude every person with glaucoma signs, so as not to cause serious and irreversible consequences to patients.