Iris segmental atrophy is the result of a certain state of high intraocular pressure that impairs blood supply to the iris artery, causing ischemic segmental or fan-shaped atrophy consistent with the shape of the distribution of the iris artery. Iris segmental atrophy is a clinical manifestation of acute congestive glaucoma in remission. How can I effectively prevent the symptoms of iris segmental atrophy? Acute angle-closure glaucoma is one of the most blinding eye diseases, and it is important to make sure that the pressure drops as quickly as possible. After the pressure has dropped, the appropriate surgery should be chosen to prevent recurrence. The first step is to use pupil constricting agents and carbonic acid enzyme inhibitors or hyperosmolarity to rapidly lower the IOP and open the occluded atrial angle. Locust shrinking agent, commonly used 1% to 2% mao Guo Yunxiang Yin solution, every 3 to 5 minutes drops once, when the intraocular pressure is reduced or the hole is narrowed to every hour drops or 4 times a day; adrenergic receptor blocker, commonly used 0.25% to 0.5% of the morphine amine, 2 times a day; acetazolamide, the first dose of 500mg oral, after each 250mg. 2 to 3 times a day; hypertonic agent. 50% glycerol, 2 to 3 times per kg body weight, orally, should be used with caution or prohibited in diabetic patients. 20% mannitol 200 to 250mg/time, intravenously, usually 30 to 60 minutes after drip. 50% glucose solution intravenously 40 to 60mg, 1 to 2 times daily; anti-inflammatory pain, 25 to 50mg/time orally, 2 to 3 times daily. Timely selection of appropriate surgery after IOP down polyester is an effective method of anti-glaucoma. For middle-aged and above, who often have self-conscious symptoms such as eye distension, headache, visual hooding, and iris vision in the evening; for patients with peripheral anterior chamber depth with <=1/4 corneal thickness. Both of these conditions should be considered as having the possibility of closed-angle glaucoma, and a cyanopexy should be performed to clarify the diagnosis. Those with proven preclinical glaucoma must undergo prophylactic laser or peripheral iridotomy as early as possible to prevent acute attacks.