People of any age, from children to the elderly, can develop glaucoma. There are four major types of glaucoma: primary glaucoma, secondary glaucoma, mixed glaucoma, and congenital glaucoma. Glaucoma is classified into acute and chronic according to the urgency of the onset of the disease, and into open-angle and closed-angle according to the change of the intraocular atrial angle, etc. The duration of blindness in glaucoma under high intraocular pressure varies from a few days to several years, and the blindness rate is almost 100% without treatment. Some people tend to confuse glaucoma with cataracts, thinking that if we wait until we can’t see and then treat it, we will completely lose the chance of treatment when the optic nerve is completely atrophied. So, what are the manifestations of glaucoma? According to Zhu Dongmei, director of the ophthalmology department of Zhengzhou People’s Hospital, there are various manifestations of glaucoma. The most typical primary acute angle-closure glaucoma is the most recognized, with eye pain, headache, vision loss, rainbow-like aura when looking at lights, and even nausea and vomiting during the grand mal period, and some people will go to the gastroenterology or neurology department, but such manifestations only account for a small percentage of glaucoma. Most of the glaucoma will not show typical symptoms. Minor attacks have cold-like symptoms such as sore eyes, tearing, eye swelling, dry eyes and head discomfort, which usually improve after rest. Most people with open-angle glaucoma and chronic closed-angle glaucoma do not have any symptoms, and some people complain of blurred vision, shadows in the visual field, flying mosquitoes in front of the eyes, or unintentional blindness at one glance. There is also congenital glaucoma, which manifests as photophobia, tearing, blue eyes, and larger black eyes in children. Regardless of whether there is sensation or not, as long as the eye pressure is elevated, it will cause progressive atrophy of the optic nerve and irreversible loss of visual field or visual acuity. Except for secondary glaucoma, most primary glaucoma develops in both eyes, at the same time or a few days, months or years apart. In conclusion, glaucoma has diverse symptoms and is difficult to diagnose, but is more harmful. The principle of glaucoma treatment is early detection and early treatment. The treatment of glaucoma is more complicated, and corresponding measures are taken according to different IOP, visual field, symptoms of the disease, different stages, patient’s compliance, different geographical areas, economic conditions, etc. The mature treatments for glaucoma, in summary, are divided into three major categories, which are drug, laser and surgical treatments. Drug therapy is generally used in the early stages of the disease, when the disease responds well to the drug, when the patient has good compliance with the drug, and when the patient can be reviewed regularly. Laser treatment with iridotomy is used for patients with one eye onset and the other eye in the pre-onset phase. If the atrial angle has closed after a major attack and medications are no longer sufficient to lower the IOP, surgery is usually the treatment of choice. In addition, drainage tube implantation is being introduced, but it will take a long time for the treatment to become a mature technique. Regardless of the treatment, it can only control the development of the disease and protect the existing visual function, not cure it. Therefore, glaucoma patients need lifelong follow-up to prevent the disease from recurring unknowingly and quietly eating away your vision.