There are three main categories of glaucoma, primary glaucoma, secondary glaucoma, and developmental glaucoma. Primary glaucoma is divided into primary open-angle glaucoma and primary closed-angle glaucoma. Patients with primary open-angle glaucoma have an open atrial horn for atrial drainage but no normal drainage function, while patients with primary closed-angle glaucoma have a closed atrial horn for atrial drainage and thus cannot perform their drainage function. In our country, primary closed-angle glaucoma is the most common type of glaucoma. Primary closed-angle glaucoma This is the most common type of glaucoma in our country. In this case, the anterior chamber angle is closed. If it closes suddenly and the IOP rises very high for a short time, it is called acute closed-angle glaucoma, which is characterized by severe eye pain, eye redness, blurred vision, halos, headache, and sometimes even nausea and vomiting, and some patients are mistaken for “acute gastroenteritis,” “migraine,” or “severe cold. “In addition to the typical symptoms, many patients may experience transient iris, blurred vision, eye swelling and nasal root pain, which can be relieved by rest. The other condition is the gradual closure of the anterior chamber angle, called chronic closed-angle glaucoma, which the patient may not feel. Primary open-angle glaucoma In this case, the anterior chamber angle appears to be open, but there is actually a problem with drainage, causing a gradual and slow increase in intraocular pressure. The damage to vision in primary open-angle glaucoma is slow and progressive and painless, so it is difficult for most people to detect it in time for early detection. Some patients are prone to visual fatigue and eye discomfort in the early stage, and some may show progressive myopia and blurred vision. Detailed ophthalmologic examinations such as pressure leveling IOP, computerized threshold visual field, and atrial angle examination should be performed if the above symptoms are present. If glaucoma is clearly identified, an appropriate treatment plan should be formulated according to the specific condition and medication or surgery should be performed. Secondary glaucoma Secondary glaucoma is caused by other eye diseases or systemic diseases as well as the application of certain medications, the normal circulation of atrial water is disturbed or disrupted, and the atrial water outflow channel is blocked and the intraocular pressure is increased. In this type of glaucoma, in addition to the optic nerve damage caused by elevated IOP, there is also a more serious primary disease, and both IOP levels and the management of the primary disease should be considered in the diagnosis and treatment. Developmental glaucoma includes both infantile and juvenile glaucoma. As the name suggests, the former is mainly in infants and young children, some of whom have had the disease before birth, and is characterized by large eyes, large corneas (black eyes), haze (no luster), tearing, photophobia, frequent eye rubbing, and crying and restlessness. If you have these conditions, you should go to the hospital early for examination to clarify the diagnosis. This type of glaucoma has a family genetic component in about 25% of cases, so emphasis is placed on maternal health care, especially during the first 3 months of pregnancy when the mother is pregnant to protect. Juvenile glaucoma refers to developmental glaucoma with onset from 6 to 30 years old, also caused by anterior chamber angle dysplasia, but the symptoms appear late, no eye and cornea enlargement in appearance, generally asymptomatic in early stage, and can develop to a certain extent with rainbow vision (seeing things like a rainbow), eye swelling, headache, etc. Some patients show myopia deepening, so early diagnosis is more difficult and requires vigilance and timely access to Therefore, early diagnosis is difficult and requires vigilance and timely examination by an ophthalmologist. Repeated fundus examinations and measurement of intraocular pressure are essential.