Myopia is divided by degree. Ametropia with a degree greater than 600 degrees (children > 400 degrees) is called high myopia

Abstract: high myopia often develops rapidly at an early age, In adolescence (15-20 years old), there will be another development peak. Different from simple myopia, some high myopia do not stop the development of myopia even in adulthood, so some people also call it progressive myopia.

high myopia often develops rapidly in childhood and in adolescence (15-20 years old) there will be another development peak. Different from simple myopia, some high myopia will not stop the development of myopia even when they reach adulthood, so some people also call it progressive myopia. High myopia has been developing continuously since the early stage of myopia, so it is very likely to worsen blinding eye diseases.

In China, high myopia is an autosomal recessive inheritance, that is, both parents are high myopia, 100% of their children are high myopia, one parent is high myopia, and 50% of their children are high hereditary myopia, but some are incomplete, The main manifestations are myopia in preschool children, the degree of myopia increases progressively, and fundus retinochoroidopathy worsens year by year, resulting in many serious complications. Therefore, high myopia is also known as pathological myopia, malignant myopia, degenerative myopia, progressive myopia and hereditary myopia.

clinical symptoms of high myopia

1. Rapid development of myopia: high myopia often develops rapidly at an early age, In adolescence (15-20 years old), there will be another development peak. Different from simple myopia, some high myopia do not stop the development of myopia even in adulthood, so some people also call it progressive myopia.

2. Exophthalmos: the eyeballs of high myopia grow significantly before and after, and some form posterior scleral staphyloma, deepening anterior chamber, ciliary muscle atrophy, and some people have obvious exophthalmos.

3. Dark shadow in front of eyes: high myopia will cause vitreous degeneration, liquefaction, posterior vitreous detachment, etc. there are turbidity and floating objects in the vitreous. Patients can see flying mosquitoes, sparks and flashes.

4. Fundus changes: arc spots can be seen next to the optic papilla, the omentum is highly leopard shaped, omental atrophy spots and macular lesions can be seen.

5. Vision loss: high myopia can cause cataract and macular hemorrhage, which can significantly reduce vision. The most serious is retinal detachment, which can lead to blindness and eye atrophy.