Abstract: the abnormal nutritional metabolism in myopia changes the capsular permeability of the lens, and the lens is gradually turbid due to nutritional and metabolic disorders. The visual acuity is gradually reduced, resulting in complicated cataract. This kind of cataract develops slowly, mainly core opacity and posterior capsule opacity.
juvenile myopia is becoming more and more serious, and myopia will cause many ocular complications. The higher the degree of myopia, the greater the possibility of complications.
70% of retinal detachment diseases are myopia. Retinal detachment is the most common complication of myopia. Due to axial elongation and intraocular dystrophy in myopia, cystic degeneration and lattice degeneration often occur around the retina. The retina in the degenerative area is very thin and prone to perforation. Some have been perforated and formed in the hole. In addition, vitreous liquefaction and increased mobility lead to detachment of the traction retina.
myopia has abnormal intraocular nutrition metabolism, which changes the capsular permeability of the lens, gradually produces turbidity due to lens nutritional disorder and metabolic disorder, and gradually reduces vision, resulting in concurrent cataract. This kind of cataract develops slowly, mainly core opacity and posterior capsule opacity.
macular hemorrhage and macular degeneration
myopia has poor ocular blood supply and retinal ischemia. The retina produces a kind of neovascular growth factor. These factors make subretinal neovascularization grow. These neovascularization tube walls are very thin and easy to rupture and bleed. After bleeding, macular hemorrhage is formed. After the bleeding is absorbed, the new blood vessels can rupture and bleed again. After multiple bleeding, local scars will form and cause macular degeneration, which will permanently damage vision.
vitreous liquefaction denaturation
vitreous is colorless and transparent jelly. When the eyeball of myopia increases, the vitreous body will not increase again, so the vitreous body can not fill all the space in the eye, resulting in liquefaction, increased mobility and turbidity, causing dark shadow in front of the eyes.
myopia the structure of the filter curtain at the anterior chamber angle is abnormal, so the outflow resistance of aqueous humor in the eye is large, which is easy to cause the increase of intraocular pressure. According to statistics, 30% of high myopia have glaucoma, which will cause the gradual loss of vision.
strabismus and amblyopia
myopia can cause exotropia or exotropia. If the difference between the degrees of myopia in both eyes is greater than 300 degrees, it is easy to cause deep exotropia and amblyopia. Many majors of
teenagers will be limited when they are employed, such as marine transportation, civil aviation control, marine fishing, marine fishery resources, cooking, flight technology, navigation technology, fire engineering, criminal science and technology, investigation, public security related majors, etc.