Foggy iridopia is caused by high intraocular pressure and impaired fluid circulation in the eye, resulting in corneal edema and refractive changes, which can lead to an orange-red outer ring, a purple-orange inner ring, and a green ring in the middle. When the eye pressure returns to normal, the ring disappears. This phenomenon is medically known as iridopsia. Glaucoma Glaucoma, often called glaucoma, is a serious eye disease that causes a slow loss of visual field leading to blindness. Doctors often refer to glaucoma as the thief of visual function and the world’s first irreversible blindness. According to the results of a large-scale glaucoma awareness survey, the majority of the general public is unaware of the serious consequences of glaucoma, let alone the fact that glaucoma can reduce and slow down the occurrence of blindness when treated promptly. According to the World Glaucoma Association, by 2020, 79.6 million people worldwide will have glaucoma, 11.2 million of whom may eventually become double blind. The incidence of glaucoma is on the rise, with a current prevalence of 2% in people over 40 years of age in China. Glaucoma is a disease that has a tendency to run in families. It is relatively easy to understand that closed-angle glaucoma is related to the structure of the eye itself, and this structural feature is hereditary. Open-angle glaucoma, on the other hand, is also genetically linked, and certain genes have been identified as susceptibility genes for glaucoma. Approximately 10% of patients with primary congenital glaucoma have significant autosomal recessive inheritance characteristics. Therefore people with relatives in the family who have glaucoma are about 10 times more likely to develop glaucoma than others. We often warn patients that high myopia and glaucoma are sisters, meaning that people with myopia are more likely to suffer from open-angle glaucoma, while those with hyperopia are more likely to suffer from closed-angle glaucoma in middle and old age due to the formation and aggravation of cataracts. Third, patients with endocrine diseases such as diabetes and thyroid disease are also more likely to have combined glaucoma. Fourth, people with high work pressure, irregular life, easy to lose temper, and high daily mood swings. Because, psycho-psychological factors are also a major cause of glaucoma. Secondly, the symptoms of glaucoma are more variable when it develops. This means that there are times when you know when glaucoma is onset, and other times when it’s not helpful by the time you find out. Most patients in the visual field and optic nerve lesions before there is an increase in intraocular pressure, the normal range of intraocular pressure is 10 mm Hg 21, when the finger gently touch the eye is rich in elasticity, when the intraocular pressure rises to 25 mm Hg 40, when the finger touch the eye as if pumping the ball, more hard. When the rise to 40 ∽ 70 mm Hg, and then finger touch, the eye is hard like a stone acute eye pressure rises, compression of the optic nerve, nerve conduction function is temporarily damaged, the patient will feel vision loss and foggy vision, will disappear after rest. When the IOP rises sharply, the trigeminal nerve endings are stimulated, reflexively causing pain in the trigeminal nerve distribution area, and patients often feel migraine and eye swelling pain, etc. Elevated IOP can also reflexively cause excitation of the vagus nerve and the vomiting nerve center, resulting in severe nausea and vomiting. Therefore, patients with acute attacks of glaucoma are often sent to neurology and gastroenterology, where the main differentiation lies in visual acuity and IOP testing. In addition, in patients with chronic IOP elevation or paroxysmal IOP elevation, there is often only transient foggy vision, and even in patients with normal IOP glaucoma, there are no symptoms of IOP elevation at all. These patients simply feel frequent eye fatigue and discomfort; their eyes are often sore and swollen, which is relieved after rest; their vision is blurred, myopia or presbyopia suddenly deepens; their eyes often feel dry and other atypical symptoms. Finally, some glaucoma patients may also have no early signs, until the optic nerve damage is significantly aggravated, the visual field defect to come to the doctor, often patients when the main complaint is unable to hang the laundry to the drying rack, meaning that only a section of the drying rack can be seen, can not see the whole, or the patient will say, I can see, but to aim a little, these manifestations are the symptoms of visual field defect. At the severe stage, the patient’s visual field is very small, and it is difficult to move around, and treatment becomes more difficult.