High myopia is a refractive error characterized by myopia of more than 600 degrees with prolongation of the eye axis and degenerative lesions such as retinal and choroidal atrophy in the fundus of the eye. High myopia is characterized by a progressive lengthening of the eye axis, a deepening of myopia year by year, a dilatation of the posterior segment of the sphere, and degenerative changes in the retinal choroid, which seriously affects visual function, and is therefore also called pathological myopia. As we grow older, the myopia deepens progressively, and it is difficult to correct the vision to normal even after wearing glasses, and even serious visual impairment occurs. The chances of high myopia being passed on to the next generation are as follows: 1. If both parents are highly myopic, their children usually have a prevalence of 98% or more; 2. If both partners are myopic gene carriers but have normal vision, the incidence of high myopia in their children is 25%; is there any special treatment for high myopia? In addition to good eye hygiene habits and strict time control. The best way to control high myopia is to use rigid corneal contact lenses, or RGP, which can help control the rapid progression of high myopia. For children with low myopia, the use of Mondial Corneal Lenses may be considered.