Why does high myopia have macular degeneration

Abstract: according to statistics, 5-10% of pathological myopia patients will have CNV, and often both eyes, although both eyes can be asymmetric. Patients usually have distortion of vision (visual distortion), then central scotoma (central visual field defect) in front of their eyes, gradually decline their vision, and finally lose their central vision completely., We all know that if myopia exceeds 600 degrees, it belongs to high myopia. The ocular axis of some patients with high myopia is excessively prolonged (the length can be greater than 26 mm), resulting in a series of pathological changes in the eyes, which is called pathological myopia. Macular degeneration caused by pathological myopia is called macular degeneration, which involves the macula and causes ischemia and hypoxia and retinal degeneration in the nearby tissues., So why does pathological myopia produce CNV similar to AMD? Due to the elongation of the ocular axis, different layers of the ocular wall are subject to certain tension, resulting in eye blood circulation disorder, ischemic area formation, retinal degeneration, glass membrane crack and so on. In the macular region, all these degeneration will cause the growth of choroidal neovascularization, namely CNV. With the growth of CNV, macular tissue structure changes and visual cells are destroyed, and this pathological process is irreversible. If it is not prevented, it can lead to the loss of central vision., According to statistics, 5-10% of pathological myopia patients will have CNV, and often both eyes, although both eyes can be asymmetric. Patients usually have distortion of vision (visual distortion), then central scotoma (central visual field defect) in front of their eyes, gradually decline their vision, and finally lose their central vision completely., Pathological myopia is the most common cause of CNV in people under 50 years old. At present, the etiology is unknown. The incidence rate of pathological myopia in the eastern countries is much higher than that in western countries, and may be related to race. Therefore, prevention is the key. Patients with high myopia should pay attention to eye care. Experts suggest that regular eye examination in eye hospitals is the best way to prevent eye diseases.,

we all know that if myopia exceeds 600 degrees, it belongs to high myopia. Some patients with high myopia have excessive elongation of the ocular axis (the length can be greater than 26 mm), resulting in a series of pathological changes in the eyes, which is called pathological myopia. Macular degeneration caused by pathological myopia is called macular degeneration, which involves the macula and causes ischemia and hypoxia and retinal degeneration in the nearby tissues.

so why does pathological myopia produce CNV similar to AMD? Due to the elongation of the ocular axis, different layers of the ocular wall are subject to certain tension, resulting in eye blood circulation disorder, ischemic area formation, retinal degeneration, glass membrane crack and so on. In the macular region, all these degeneration will cause the growth of choroidal neovascularization, namely CNV. With the growth of CNV, macular tissue structure changes and visual cells are destroyed, and this pathological process is irreversible. If it is not prevented, it can lead to the loss of central vision.

according to statistics, 5-10% of patients with pathological myopia will have CNV, and often both eyes will develop, although both eyes can be asymmetric. Patients usually have distortion of seeing (visual distortion), then central scotoma (central visual field defect) in front of their eyes, gradually decline their visual acuity, and finally lose their central visual acuity completely.

pathological myopia is the most common cause of CNV in people under 50 years old. At present, the etiology is unknown. The incidence rate of pathological myopia in the eastern countries is much higher than that in western countries, and may be related to race. Therefore, prevention is the key. Patients with high myopia should pay attention to eye care. Experts suggest that regular eye examination in eye hospitals is the best way to prevent eye diseases.