“…Some studies suggest that with the increase of myopia degree, the axial length of the eye is prolonged, the peripheral retina lacks large blood vessels and optic nerve fibers, and becomes thinner due to insufficient stress to resist pulling and stretching, while the thinning of the peripheral retina can offset the pulling force on the whole retina, so the change of macular central retina thickness is not obvious [12]. There are also studies that with the deepening of myopia, the eye axis is prolonged, and the microcirculation of the posterior pole is disordered, which leads to retinal choroidal dystrophy, the destruction of the outer segment structure of cone cells, the relative disorder of the arrangement of retinal pigment epithelial cells, and the reduction of the number of nucleated cells, especially the inner core layer [13]. However, the retina in the central macular area is mainly composed of cone cells, lacking the structure of other retina layers, so the thickness changes little.…”