There are certain differences in symptoms and performance of different types of glaucoma, which can be clinically divided into closed-angle glaucoma, open-angle glaucoma, congenital glaucoma and secondary glaucoma. 1, closed-angle glaucoma 1, chronic closed-angle glaucoma: the onset of the period usually does not have any symptoms or symptoms are light, there may be a slight eye distension, nasal root soreness, foggy vision, etc., generally after rest can be relieved. With the development of the disease, vision loss and visual field defects may appear in the later stage, and the treatment effect is often poor at this time; 2. Acute closed-angle glaucoma: It often shows obvious eye redness, eye pain, blurred vision or sharp decline, often accompanied by severe headache, nausea, vomiting, etc. If not treated in time, serious cases can lead to blindness. Second, the onset of open-angle glaucoma is relatively insidious, except for a few patients with foggy vision and eye distention when the eye pressure is elevated, most patients do not have any obvious conscious symptoms, often until the late stage, when the visual function is seriously impaired. Third, congenital glaucoma often occurs in the pediatric population and will have enlarged eyes, photophobia, tearing, accompanied by crying and irritability, and eyelid spasms. Fourth, secondary glaucoma is often caused by trauma, drugs, tumors, and other factors, and can have symptoms such as eye redness, eye pain, eye swelling, iris, vision loss, and lens displacement.