What causes sudden loss of vision?

In daily life, sudden blindness is a common situation. There are many reasons for blindness. Generally, it is caused by arterial embolism in the retina of the eye. If you have heart disease, you are prone to sudden blindness and eye congestion, which requires timely treatment.

The following are some of the conditions that can cause sudden blindness:

It is central retinal artery occlusion. This is a serious eye disease that can cause blindness within minutes or even seconds. The main causes are arteriosclerosis and heart disease. Due to arteriosclerosis, the arterial walls thicken, the lumen narrows, and blood gradually forms blood clots. This process takes place unconsciously. Once a blood clot forms in the central retinal artery in the eye and causes blockage, the retina will suddenly lose its blood supply, which can immediately cause blindness.

The preventive measures are:

(1) If you have arteriosclerosis or heart disease, treatment should be strengthened.

(2) Some people have symptoms before the disease occurs, such as paroxysmal blindness, inability to see clearly for a few seconds or minutes, and then naturally returning to normal. If you find this phenomenon, you should seek medical attention immediately.

(3) When sudden blindness occurs, immediately use vasodilators. In the first aid kit, there is a medicine packaged in a thin glass tube called amyl nitrite. Wrap it in a handkerchief, crush it, and immediately put it into the nose for inhalation.

(4) Go to hospital for diagnosis and treatment promptly. The second is fundus and vitreous hemorrhage. When the disease occurs, you may suddenly feel darkness and smoke in front of your eyes, and sometimes you may see black or red objects floating in front of your eyes. The causes of the disease are often hypertension, arteriosclerosis, diabetes, etc. Retinal hemorrhage can occur in any part of the fundus. If it occurs in the central part, blindness will occur.

It is acute optic neuritis. This is an acute eye disease that can quickly lead to blindness. The cause is inflammation of the optic nerve. Some lesions in the body, such as sinusitis, tonsillitis, bad teeth, otitis media can cause it. Influenza, pneumonia, diabetes, beriberi, etc. can all cause the occurrence of acute neuritis.

Once optic neuritis occurs, conduction is affected, causing blindness. At present, the treatment of acute neuritis has a good effect. If you can go to the hospital for treatment in time, your vision can be restored.

It's acute glaucoma. The symptoms include sudden eye pain, blurred vision, severe vision loss, bloodshot whites of the eyes, cloudy blacks of the eyes, dilated pupils, and increased intraocular pressure. The treatment methods include surgery, application of pilocarpine eye drops, oral administration of acetaminophen, glycerol, etc.