Glaucoma can be divided into primary, secondary and congenital, and the clinical symptoms vary according to the type. It can be divided into primary closed-angle glaucoma and primary open-angle glaucoma. Some patients with primary closed-angle glaucoma will first experience eye discomfort and dizziness, and then visual acuity loss and visual field defects in the late stage; primary open-angle glaucoma usually has visual field defects in the early stage and macular function changes in the late stage; 2, secondary glaucoma: mainly caused by physical or eye diseases, such as diabetes can also cause, can be divided into secondary closed-angle glaucoma, secondary open-angle glaucoma Glaucoma, due to atrial circulation disorders, increased intraocular pressure, patients often feel eye pain, headache, blurred vision, etc.; 3, congenital glaucoma: belongs to the genetic disease, caused by genetic abnormalities, newborns can be manifested as eyes photophobia, easy to tear, eyes larger than normal newborns and other performance, adolescence can appear rapid myopia and visual field defects and other performance. In addition to the above symptoms, glaucoma may also present with nasal root acidity, iris, headache, vomiting, etc. Regular checkups are recommended for those with a family history of glaucoma, high myopia, high hyperopia, those who have experienced the above symptoms and those who have not had an eye exam for a long time over the age of 35, as well as for infants and children with eyes larger than normal.