Myopia is generally stable in adulthood, but if it continues to develop into progressive myopia after the age of 20, patients with a refractive error of more than -6.00 become highly myopic. Possible complications of high myopia: 1. Almost all highly myopic eyes have a growth of the eye axis and significant thinning of the sclera at the posterior pole of the eye, with the main pathological changes being the atrophy and thinning of the retina and choroid, which worsen year by year, bringing most of the complications that can cause blindness, being the sixth most blinding disease in China. 2, macular degeneration and hemorrhage myopic eye poor blood supply, retinal hemorrhage, the retina produces 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 anon office Degeneration permanently damage vision. 3, vitreous liquefaction degeneration vitreous is colorless and transparent jelly-like, when myopic eyes increase, vitreous will not increase again, vitreous can not fill all the space in the eye, liquefaction, increased mobility, clouding, causing black shadows in front of the eyes, inducing retinal detachment. 4, 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 occur cystic degeneration, lattice-like degeneration, etc., the degenerative area of the retina is very thin, very easy to perforate, 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 the retinal detachment, 70% of myopic eyes In retinal detachment, 70% are myopic eyes. For patients with myopia, regular review (usually once every six months) is necessary, and strenuous exercise should be avoided in general.