Abstract: high myopia is easy to be complicated with maculopathy, retinal detachment, blindness caused by retinal hemorrhage and holes, macular hemorrhage and macular degeneration. Myopia has poor eye blood supply, retinal ischemia, and the retina produces a kind of neovascular growth factor. These factors promote the growth of subretinal neovascularization, and the wall of these neovascularization vessels is very thin., High myopia (degree of myopia > 600 degrees) is the sixth major 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., High myopia causes retinal detachment and blindness, which is the main complication of high myopia. 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 high myopia complicated with maculopathy leads to blindness. High myopia is easy to be complicated with maculopathy, retinal detachment, blindness caused by retinal hemorrhage and holes, macular hemorrhage and macular degeneration. Myopia has poor eye blood supply and retinal ischemia. The retina produces a kind of neovascular growth factor, which promotes the growth of subretinal neovascularization, The walls of these new blood vessels are extremely 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., High myopia complicated with vitreous liquefaction causes 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., High myopia leads to cataract blindness.
high myopia (myopia degree > 600 degrees) is the sixth approximate 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.
1 high myopia causes retinal detachment and blindness
, which is the main complication of high myopia. 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 high myopia complicated with maculopathy causes blindness
high myopia is easy to be complicated with maculopathy, retinal detachment, retinal hemorrhage, blindness caused by retinal hole, macular hemorrhage and macular degeneration, myopia has poor ocular blood supply, retinal ischemia, and the retina produces a kind of neovascular growth factor, which promotes the growth of subretinal neovascularization, The walls of these new blood vessels are extremely 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 cataract caused by high myopia
cataract is that the nutritional metabolism in myopia is abnormal, which changes the membrane permeability of lens, lens nutritional disorder and metabolic disorder, gradually produces turbidity, vision gradually decreases, and produces concurrent cataract. This kind of cataract develops slowly, mainly core opacity and posterior membrane opacity.
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special tips
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the results of the national survey on students’ physique and health conducted by the Ministry of education in 2014 show that the detection rate of poor vision among primary school students, junior middle school students and senior high school students is 45.71%, 74.36% and 83.28%. Parents should always pay attention to their children’s eye development and scientifically prevent and control their children’s myopia. Once they find that their children have blurred vision and decreased vision, they should go to a regular eye hospital immediately!