Without regular follow-up reviews, the greatest potential for glaucoma patients is to cause blindness in patients. So, what are the causes that can cause blindness in glaucoma patients? 1, open-angle glaucoma and part of chronic closed-angle glaucoma, because there are no symptoms, patients do not know that their eyes are sick, once found is already advanced or has been blinded. 2, patients do not listen to the doctor’s advice, do not trust the doctor, do not want to do any examination, will be the best time to treat missed. 3.Insufficient awareness of the dangers of glaucoma, full of care about their disease. Some people just work hard and never see a doctor until they feel their visual field shrink, then they go to the hospital. At that time, the condition is often very advanced, and one eye is lost for nothing. 4, can not use the medication on time, when there are symptoms to order drugs, no symptoms when not to order drugs, never measure the intraocular pressure, but also do not know how their eye pressure control after ordering drugs. The unreasonable use of medication delays the treatment. 5. Do not listen to the doctor’s advice. Fear of surgery, for the prognosis of surgery before the doctor, can not be treated correctly, always afraid that after surgery will be vision loss or even blindness, the surgery delayed again and again, until the late loss of the best treatment time. 6, Some patients after surgery, because the symptoms disappear, they think that glaucoma has been completely cured, and ignore the tracking observation, regular monitoring, some patients in the postoperative blindness unknowingly. 7.Some patients only pay attention to the observation of IOP after surgery without checking whether the visual field has changed. Some patients have abnormal hemodynamics, such as suffering from cardiovascular disease, hypotension and increased whole blood concentration. Due to the interaction of these factors, the optic nerve is chronically undersupplied with blood, resulting in progressive narrowing of the visual field, leading to blindness. This shows that it is very important for glaucoma patients to have regular review in the hospital. Through the review, the ophthalmologist can have a tracking understanding of the patient’s condition and treatment, and can understand whether the IOP is stable and whether the visual function continues to be impaired after the medication is administered, and use this to determine whether the condition is progressing and the degree of progress, so that the treatment plan can be adjusted and supplemented without losing time. In short, only the combination of proper treatment by the doctor and regular review by the patient can place glaucoma under the best control and supervision, and the patient can hope to obtain the most ideal treatment results. At the same time, review of glaucoma is not enough simply to measure IOP, because IOP is the basic but not the only factor of visual impairment in glaucoma, and other factors exist, such as age, race, diabetes, hypertension, and increased whole blood concentration. It should be reviewed regularly, and when the IOP is controlled and the visual function still declines, systemic disease should be treated.