Reasons for Sudden Vision Loss_Industry Information_
The sudden loss of vision is a very scary thing, and in severe cases, it can cause blindness of the eyes. There are many reasons for the sudden loss of vision, so it is also very important to protect the eyesight at ordinary times. If there is a sudden loss of vision, be sure to seek medical attention as soon as possible. Let's take a look at the causes of sudden loss of vision. Retinal reasons: (1) Diabetic retinopathy, one of the important eye diseases causing blindness, mainly in diabetic patients. (2) Retinal detachment, which is more common in middle-aged and elderly people. When the retina is completely detached, the visual acuity will suddenly decrease. (3) Central retinal artery occlusion, acute retrobulbar optic neuritis (including demyelinating disease), neuromyelitis optica, multiple sclerosis, central retinal vein occlusion, inkstone periphlebitis, etc. Glaucoma Some patients do not have many symptoms before, but if glaucoma occurs, it will seriously affect their vision. Therefore, if it is detected early, it must be treated early. Acute angle-closure glaucoma has a certain familial tendency. If you have this eye disease, there will be a sudden loss of vision, and it will also be accompanied by eye pain, headache, nausea and other phenomena. Macular diseases, mainly including age-related macular degeneration, macular hole and epiretinal membrane, the size of things will change when looking at things, the color will be darker or yellowish, there will be flashes and fixed shadows in front of the eyes. Can cause sudden loss of vision. Optic head ischemia Because some of the blood vessels supplying the optic nerve head are hardened, resulting in ischemia of the optic nerve in the corresponding blood supply area, resulting in the degeneration of the optic head, which will cause a sudden loss of vision and a fixed blind spot in front of the eyes. Vitreous hemorrhage A new blood vessel or blood vessel in the fundus of the eye is damaged, and blood enters the vitreous body, blocking the entry of light, resulting in decreased vision. If there is a lot of blood accumulation, it will cause a sharp decline in vision. Eye trauma Eye trauma is also a cause of vision loss. However, if some people have eye trauma, many people tend to ignore the inspection and subjectively think that the eyes will be healed naturally, but the damage to the eyes by some substances is not easy to heal, such as thermal burns, chemical burns, etc. are more serious If so, it will cause eye infection, cause related eye diseases, and cause sudden loss of vision. Eye infections are common keratitis, corneal ulcers, endophthalmitis, pus of the whole eye, iridocyclitis and so on. Some other physical ailments can also cause sudden vision loss. Such as diabetes, leukemia, emergency methanol, quinine poisoning, pseudoblindness, and massive bleeding from the fundus. It is also necessary to pay attention to whether there are plaques, stenosis, abnormal flow velocity, etc. in the blood vessels of the neck, brain and eyes.