1. Age: Over the course of a person’s life, even healthy eyes will gradually elevate. This is due to aging of the atrial aqueous drainage system of the eye. For most patients with glaucoma, the increase in IOP begins between the ages of 40 and 50. Some patients also experience an increase in IOP at a later age. 2. Family background: It has long been recognized that children of glaucoma patients are more likely to develop glaucoma than the general population, but this does not mean that all children of glaucoma will develop the disease. Although it is true that genetic factors play a non-negligible role in the development of glaucoma, unfortunately current studies still do not have direct evidence to explain this problem. There is no doubt that if there is one glaucoma patient in the family, it is important for the rest of the family to have regular eye exams. If there are multiple glaucoma patients in a family, it is best to start eye exams for other family members when they are 20 to 30 years old, and not later than 30 to 40 years old. 3. Race: Foreign research data show that the type of glaucoma varies by race; myopia and hyperopia: people with hyperopia have a higher chance of acute closed-angle glaucoma, but with the same intraocular pressure, people with myopia are more likely to have glaucomatous optic nerve damage; 4. Other risk factors that may cause glaucomatous optic nerve damage are: hypertension, atherosclerosis, systemic hypotension and other factors that can cause vascular dysregulation factors.