The second most blinding eye disease: insidious glaucoma is the second most blinding eye disease in the world, and the first irreversible eye disease that commonly and seriously endangers people’s health and affects their lives. There are nearly 10 million glaucoma patients in China and nearly 70 million patients worldwide. It is rapid, dangerous, insidious and can lead to blindness at any time. It can affect all ages, from infants to the middle-aged and elderly, and has a certain degree of heredity. Because of its “insidious” nature, the disease is not easily detected in the early stages and is often difficult to control when symptoms become apparent. Therefore, early prevention and detection through regular eye examinations is a key step to avoid this “invisible vision killer”. According to the World Health Organization, half of glaucoma patients in developed countries do not know they have glaucoma, and over 90% of glaucoma patients in developing countries are unaware of their disease and have never even heard of glaucoma. However, once the disease is present, it is not only difficult to treat, but also difficult to reverse. Ophthalmologists remind everyone that people with a family history of glaucoma (especially those with glaucoma in their immediate family) should have regular checkups at specialized eye hospitals. Once you notice eye swelling, headache, or a rainbow-like sensation when looking at lights, you must go to the hospital for prompt medical attention. Glaucoma develops in both eyes. If one eye is affected, the other eye should also be examined promptly. It is important to have regular checkups during treatment to avoid asymptomatic progressive blindness. In order to strengthen public education, let more people understand the potential hazards of glaucoma, pay attention to eye examinations and effectively prevent glaucoma, many domestic ophthalmic medical institutions carry out a large number of glaucoma awareness-raising and charity clinics every year. 5 groups of people at high risk of glaucoma, such as those with high myopia or hyperopia, family history of glaucoma, high or low blood pressure, diabetes, over 40 years old, etc. People who are at high risk of glaucoma, such as those with high myopia or hyperopia, family history of glaucoma, hypertension or hypotension, diabetes, and over 40 years old, as well as those who have been treated for glaucoma, should visit the ophthalmology department regularly for detailed examination of glaucoma.