What happens when you have an eye stroke?

  We often hear the term “stroke” through various channels, and the term “stroke” comes from the Yellow Emperor’s Classic of Internal Medicine, a Chinese medical treatise written more than 2,000 years ago in China.  The term “stroke” is a generic term for a type of disease that causes acute severe ischemia of brain tissue due to cerebrovascular spasm, cerebrovascular sclerosis, cerebrovascular malformation and cerebrovascular embolism, causing brain function disorders. These diseases have a rapid onset and are characterized by sudden fainting and unconsciousness, or sudden onset of distorted mouth and eyes, unfavorable speech, and hemiplegia. Since the blood supply to both the eyes and the brain can come from the carotid artery, it is obvious that since the brain can have a “stroke”, our eyes can also have a “stroke”. However, the concept of “eye stroke” is not well understood.  Ms. Sun, who is engaged in media writing work, has not yet reached the age of maturity, and is dedicated to her job. A few days ago, in order to timely completion of the department’s multiple copywriting tasks, she tirelessly buried in front of the computer screen all day, and even several times a short period of blackness in front of her eyes, she did not care. Finally, one morning, she woke up and found her right eye was blurred, at this time, she rushed to the hospital and found that her vision had dropped from 0.8 to 0.1 with glasses. Some of the arteries showed signs of blockage, and the veins were dilated and had salami-like changes, with patchy hemorrhages around the vessels. The retina, which is supplied by arterial blood, changed from normal pink to pale white, and the macula, the most sensitive area of vision, showed obvious edema. I was shocked. Wasn’t this an ophthalmic emergency – retinal artery embolism? This disease is often seen in the elderly, can it happen to her at such a young age? But my years of medical experience told me that my judgment was correct, probably because the site of embolism was not in the central retinal artery trunk, and the vascular elasticity of young people was relatively good, and there might be blood supply from the collateral circulation, the patient’s vision was not yet irreparably damaged. In order to save her vision, I took a series of resuscitation measures, including pressure on the eyeball, sublingual nitroglycerin, intravenous dextran and salvia, subcutaneous injection of compound camptothecin into the superficial temporal artery, and reduction of intraocular pressure, etc. The day after the visit, hyperbaric oxygen therapy was also administered. Perhaps it was God’s blessing that our efforts were reported. A few days later, Ms. Sun’s retinal artery blood flow was gradually restored, and her corrected visual acuity was even restored to 1.0! “It can lead to blindness within a few hours.  Retinal artery blockage is most common in middle-aged and elderly people, and is often associated with conditions such as atherosclerosis, hypertension, diabetes, arteritis and coagulation disorders, and can also be triggered by intraocular or intraorbital surgery. Retinal artery spasm or embolism persists, local retinal ischemia and hypoxia, retinal edema or necrosis in the corresponding area, and visual function may be significantly impaired. As the pace of the city increases and people’s work pressure increases, the risk of retinal artery occlusion in young adults is also increasing due to the consequent increase in cardiovascular diseases.  For ophthalmology clinicians, retinal artery blockage is tricky to treat, even if the diagnosis is timely and rescue measures are in place, it often causes a certain degree of irreversible damage to vision, just like the familiar myocardial infarction. The above rescue process of Miss Sun is only a special case, most patients are not so lucky. Therefore, the disease should be prevention-oriented, regular life should be achieved, effective monitoring of blood pressure, blood sugar and blood lipids, avoid overwork, overload, excessive mental stress and great sadness and happiness and other triggers.  Once a transient black phenomenon appears, it often means that there is a possibility of retinal artery spasm, which should be paid more attention, timely consultation, rescue must be scrambled, if necessary, oral some drugs to activate blood stasis, dilation of microvascular. Do not be paralyzed and cause lifelong regret. When the black phenomenon is difficult to lift for a while, and there is no effective drug at hand, repeated eye pressure for a short time is a simple and effective method, which on the one hand can increase the elasticity of the blood vessels and make the narrowed blood vessels dilate to win time for saving vision; on the other hand, it can promote the embolus to enter the peripheral retina and reduce the infarcted area.