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Currently, there are There are 1.4 billion myopia patients, and the number of myopia patients in my country is as high as 600 million. Usually myopia within 300 degrees is mild myopia, 300-600 degrees is moderate myopia, and more than 600 degrees is high myopia. There is now a consensus in the medical community that high myopia has been listed as one of the most important causes of blindness. Therefore, people with myopia must consciously control the increase of their myopia degree, pay attention to eye hygiene, and do not develop into high myopia.
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What are the complications of high myopia?
There are four major complications of high myopia: retinal detachment, macular degeneration, glaucoma, and cataracts.
The eyeball is divided into three layers, the first layer is the sclera, the middle layer is the choroid, and the last layer is the choroid. The inner layer is the retina. The function of the retina is to sense light. After the light enters the eye, the retina converts the light source into electric waves and transmits it to our brain, so that we can perceive the light.
Retinal Detachment: A normal eye shaped like Apple, as myopia continues to increase, the patient’s eyeball stretches out and becomes a grape-like shape. In high myopia, the retina changes from a dense structure to a gauze-like structure, and some water will penetrate into it, gradually tearing off the retina, interrupting the supply of nutrients, and losing the function of vision.
Maculopathy: The macula contains very dense Photoreceptor cells, located in the very center of the retina. In high myopia, the retina becomes thinner, resulting in the inability of the choroid to provide nutrients to the macula, and ischemia and hypoxia will produce choroidal neovascularization, leading to lesions.
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Glaucoma: The pathogenesis of glaucoma has not yet been confirmed by medicine, but this The vast majority of these diseases have the performance of high intraocular pressure, eye swelling, eye pain, and the visual field will become narrower and narrower.
Cataracts:For people with high myopia , the age of cataracts will advance to forty or fifty years old. Cataracts occur in the lens, which is cloudy and blocks light, resulting in hazy vision.
Special reminder,There are two criteria for blindness : One is that the visual acuity chart is less than 0.05; the other is that the visual field is less than 5 degrees. The three diseases of retinal detachment, macular degeneration and cataract should be detected and treated as soon as possible. The visual field loss of glaucoma is irreversible, and rapid treatment can control the visual field loss.
Suggestive symptoms of blinding eye disease
If you feel that your vision is distorted or cloudy, your vision is blocked by black shadows, there are more shadows, the object is more fluttering, and there is a flashing sensation, you need to seek medical attention in time.
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Can UV light prevent myopia?
UV rays do not prevent myopia, but more sun exposure can prevent myopia. When exposed to sunlight, the human body will produce retinal dopamine and other components, which can make the sclera harder, and the retina is not easy to grow and thin.
Is an unhealthy spine the culprit of myopia?
This statement is not accurate. Under the normal physiological curvature of the spine with a slight tilt of the head, the veins, central nerves, and vertebral arteries in the spinal canal are the most unobstructed. Prolonged bowing of the head and high fatigue of the cervical spine will lead to insufficient blood supply to the brain, visual dizziness, blurred vision, swollen eyes, and dizziness, but it will not cause myopia.
What causes myopia?
Not enough outdoor activities p>
Working and studying in environments with too much light or too little light
sleep Insufficient
Lying to read a book
Overuse of electronic products
Sleep with the light on
Special Tips: For electronic products for learning, no more than 4 hours per day; for electronic products for entertainment, no more than 2 hours per day. The “202020” rule for eye protection: After using your eyes for 20 minutes, look 20 feet (5 meters) away for 20 seconds.
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Source: CCTV Finance
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