Glaucoma is a common eye disease and one of the most common eye diseases that cause blindness. The normal eye, which often maintains a certain level of tension, is formed by the pressure added by the contents of the eye for the walls of the eye, medically known as intraocular pressure. The IOP of a normal Chinese person is between 1.4 and 2.8 kPa. The production of intraocular atrial fluid and impaired circulation are the main causes of elevated IOP causing glaucoma. The intraocular pressure in glaucoma patients often exceeds 3 kPa, and in some cases it is as high as 10 kPa or more. Due to the high intraocular pressure, the optic nerve and macula are compressed and malfunction, so it causes vision loss, headache, eye pain, blurred vision, looking at the lights around the rainbow circle, the eye is hard as a stone, etc. If not treated in time, it often leads to blindness, so it is very important to strengthen prevention. 1, keep a happy mood Anger and anxiety and mental stimulation, it is easy to make the eye pressure rise, causing glaucoma, so usually keep a happy mood, do not get angry and anxious, not to mention anxiety over household chores. 2, keep a good sleep Sleep restlessness and insomnia, easily cause the eye pressure to rise, inducing glaucoma, the elderly should wash their feet before bed, drink milk, to help sleep, if necessary, take hypnotic drugs, especially for people with high intraocular pressure, but also to get a good sleep. 3, less work or play in a dark environment People who work in dark rooms, every 1 to 2 hours to get out of the dark room or appropriate lighting. Emotional people, to watch fewer movies, watch TV, but also to open a small light next to the TV lighting. 4, avoid overwork Whether it is physical labor or mental labor, the body is overworked are prone to fluctuations in intraocular pressure, so pay attention to the regularity of life, combined with work and rest, avoid overwork. The elderly should “eat eight full meals, do not smoke, do not drink alcohol, do not drink coffee, do not drink strong tea, do not eat spicy and irritating food.