Myopia is generally stable in adulthood, but if it continues to develop into progressive myopia after age 20, patients with refractive error above -6.00 become highly myopic. Possible complications of high myopia: Almost all high myopia eyes have a growth of the eye axis and significant thinning of the sclera at the posterior pole of the eye, the main pathological changes are atrophy and thinning of the retina and choroid, which worsen year by year, bringing most of the complications can cause blindness, and is the sixth most blinding disease in China. Macular degeneration and hemorrhage poor blood supply in myopic eye, retinal hemorrhage, retina produce a kind of neovascularization factors, these factors make the growth of subretinal neovascularization, these neovascular walls are extremely thin, very easy to rupture hemorrhage, hemorrhage after the formation of macular hemorrhage, hemorrhage absorption, neovascularization can rupture again, hemorrhage, so repeatedly many times after the formation of local scarring, resulting in macular degeneration, not an office degeneration Permanent damage to vision. Vitreous liquefaction degeneration vitreous is colorless and transparent jelly-like, when myopic eye increases, vitreous will not increase again, vitreous can not fill all the space in the eye, there is liquefaction, increased mobility, clouding, causing black shadows in front of the eyes, inducing retinal detachment. Retinal detachment is the most common complication of myopia, due to myopic eye axis elongation and intraocular nutritional disorders, the peripheral part of the retina often occurs cystic degeneration, lattice degeneration, etc. The retina in the degeneration area is very thin, very easy to occur perforation, some have been perforated in the formation of the fissure, coupled with vitreous liquefaction, increased mobility, pulling the retina to increase the chances of detachment, in retinal detachment, 70% is myopic eyes. For patients with myopia, regular review (usually once every six months) is necessary, and strenuous exercise should be avoided in general.