Myopia can cause many eye complications, most of which are blinding, and the higher the degree of myopia, the greater the likelihood of complications. These complications are: 1. Retinal detachment is the most common complication of myopia. Due to myopic eye axis elongation and intraocular nutritional disorders, cystic degeneration and lattice-like degeneration often occur in the peripheral part of the retina. The retina in the degeneration area is very thin and easily perforated, and some of them have already perforated to form Über-cleft, coupled with vitreous liquefaction and increased mobility, pulling the retina to detach. In retinal detachment, 70% of them are myopic eyes. 2. Cataract The nutritional metabolism in myopic eyes is not normal, so the lens capsule membrane permeability changes, the lens nutritional disorders and metabolic malfunction gradually become cloudy, and the vision gradually decreases to produce complication cataract. This kind of cataract develops slowly, and core clouding and posterior capsule clouding are the main causes. Macular hemorrhage and macular degeneration Poor blood supply in myopic eyes, retinal ischemia, retinal neovascular growth factors, these factors make subretinal neovascular growth, these neovascular walls are extremely thin, very easy to rupture and bleeding, bleeding macular hemorrhage. After the hemorrhage is absorbed, the neovascularization can rupture and hemorrhage again, and after repeated hemorrhage, a short scar will be formed locally, resulting in macular degeneration, and macular degeneration permanently damages vision. 4.Vitreous liquefaction degeneration Vitreous humor is colorless and transparent jelly-like. When the myopic eye enlarges, the vitreous does not increase, so it cannot fill all the space in the eye, and it becomes liquefied, with increased mobility and cloudiness, causing black shadows in front of the eyes and inducing retinal detachment. 5, glaucoma Myopic eyes have abnormal filter curtain structure at the atrial angle, so the atrial water flow resistance in the eye is higher, easily causing an increase in intraocular pressure. According to statistics, 30% of highly myopic eyes have glaucoma, and this glaucoma will cause gradual loss of vision. 6, strabismus, amblyopia Myopia can cause exotropia or exotropia, such as the difference between the myopia of both eyes is greater than 300 degrees, easy to cause the degree of deep eye exotropia and amblyopia.