Myopic 1000 degrees old meeting how

When the eye is in a relaxed state of accommodation, parallel rays focus on the retina after passing through the refractive system of the eye. It is divided into refractive myopia and axial myopia. Less than 300 degrees is mild myopia, 300 to 600 degrees is moderate myopia, and more than 600 degrees is high myopia. 1000 degrees myopia is high myopia, in addition to poor vision, but also accompanied by poor night vision, floaters, flash feeling and other performance, easy to occur in different degrees of fundus changes, such as myopia arc spots, leopard shaped fundus, macular hemorrhage or the formation of neovascular membrane, paint cracks, ocular axis after the sclera staphyloma, corneal peripheral degeneration, etc. More prone to retinal detachment, hole, vitreous liquefaction, opacity, posterior vitreous detachment, macular hemorrhage and neovascularization.