Abstract: according to the latest survey by the Ministry of education and the Ministry of health, the 400 million myopia in China is mainly manifested in the youth population. The myopia rate has shown a pattern of “the older the more common, the younger the age, the faster the growth rate”., High myopia is the sixth blindness disease in China, second only to cataract, glaucoma, macular disease and other eye diseases. According to statistics, there are more than 280000 patients with blindness caused by high myopia and eye diseases in China. October 15, 2015 is the international blind day. In order to attract more people’s attention to the blindness caused by high myopia, although high myopia itself does not cause blindness, it will increase the incidence of blindness causing diseases such as retinal hole, retinal detachment, macular degeneration and cataract., Nearly 70% of teenagers suffer from high myopia, with an obvious trend of rapid aging. According to the latest survey by the Ministry of education and the Ministry of health, at present, 400 million myopia in China is mainly manifested in the youth population, and the myopia rate has shown a pattern of “the older the more common, the younger the age, the faster the growth rate”. Why does juvenile high myopia show a rapid increasing trend of younger age? On the one hand, nowadays, there are more and more electronic products. Teenagers playing with mobile phones, iPads and other electronic products for a long time is easy to cause eye fatigue. On the other hand, teenagers have heavy learning and less outdoor activities, which is prone to myopia., High myopia lenses, four cases of blindness caused by high myopia, “high myopia itself does not cause blindness, but its complications can cause blindness.” High myopia causes blindness mainly in the following aspects: 1. High myopia causes retinal detachment and blindness, which is the main complication. Due to the axial elongation and intraocular dystrophy of myopia, the peripheral part of the retina often suffers from retinoid degeneration and lattice degeneration. The retina in the degeneration area is very thin and is prone to perforation. Some have been perforated to form holes. In addition, vitreous liquefaction and increased mobility lead to detachment of the traction retina. Among the patients with retinal detachment, 70% are myopia.,
high myopia is the sixth blindness disease in China, second only to cataract, glaucoma, macular disease and other eye diseases. According to statistics, there are more than 280000 patients with blindness caused by high myopia and eye diseases in China. October 15, 2015 is the international blind day. In order to make more people pay attention to the blindness caused by high myopia, although high myopia itself does not cause blindness, it will increase the incidence of blind diseases such as retinal hole, retinal detachment, macular degeneration and cataract. Nearly 70% of
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teenagers suffer from high myopia, and the trend of rapid growth at a younger age is obvious.
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according to the latest survey of the Ministry of education and the Ministry of health, at present, 400 million myopia in China is mainly manifested in the youth population, and the myopia rate has shown a pattern of “the higher the age is, the faster the growth at a younger age”. Why does juvenile high myopia show a rapid increasing trend of younger age? On the one hand, nowadays, there are more and more electronic products. Teenagers playing with mobile phones, iPads and other electronic products for a long time are easy to cause eye fatigue. On the other hand, teenagers have heavy learning and less outdoor activities, which is prone to myopia.
high myopia lens
four cases of blindness caused by high myopia
“high myopia itself does not cause blindness, but its complications can cause blindness.” High myopia causes blindness mainly in the following aspects:
1 high myopia causes retinal detachment and blindness
, which is the main complication. Due to the axial elongation and intraocular dystrophy of myopia, the peripheral part of the retina often suffers from retinoid degeneration and lattice degeneration. The retina in the degeneration area is very thin and is prone to perforation. Some have been perforated to form holes. In addition, vitreous liquefaction and increased mobility lead to detachment of the traction retina. Among the patients with retinal detachment, 70% are myopia.
2 blindness caused by high myopia complicated with macular diseases
macular hemorrhage and macular degeneration. Myopia has poor ocular blood supply, retinal ischemia, and the retina produces a kind of neovascular growth factor. These factors promote the growth of new blood vessels under the retina, and the walls of these new blood vessels are very thin. Easy to rupture and bleed, and form macular hemorrhage after bleeding. After the bleeding is absorbed, the new blood vessels can rupture again and bleed again. After multiple bleeding, local scars are formed, causing macular degeneration, thus permanently damaging vision.
3 high myopia complicated with vitreous liquefaction blindness
when the axis of myopia increases, the vitreous will not increase again, so the vitreous can not fill all the space in the eye, resulting in condensation and liquefaction. The condensed part has high density and can have flocculent, filiform, colorless and transparent turbidity. The vitreous structure in the liquefied part disintegrates, forming a gap filled with liquid, increasing the vitreous activity, pulling the retina to separate, causing the dark shadow in front of the eyes, resulting in blindness.
4 high myopia leads to cataract blindness. The intraocular nutrition metabolism of
myopia is abnormal, which changes the membrane permeability of the lens, gradually produces turbidity due to lens nutritional disorder and metabolic disorder, and gradually decreases vision, resulting in concurrent cataract. This kind of cataract develops slowly, mainly core opacity and posterior membrane opacity.
“note: as there are many complications of high myopia and can seriously affect visual function, patients with high myopia regularly go to specialized hospitals to check fundus and intraocular pressure, so as to facilitate early detection, early diagnosis and early treatment.”