Terrible high myopia

high myopia is also called pathological myopia, malignant myopia, degenerative myopia, progressive myopia and genetic myopia.

high myopia is accompanied by thick lenses. The prevalence of high myopia is very high, and many serious complications can occur, most of which will cause blindness. It is one of the common causes of blindness in adults and ranks the sixth among blinding diseases in China. The main complications were

and

. 1. Posterior scleral staphyloma: the incidence was 77.1%. The main manifestations were posterior expansion of the posterior pole of the eyeball, degeneration and atrophy of the optic nerve and perimacular retina, and decreased corrected visual acuity. The higher the degree of myopia, the higher the incidence of posterior scleral staphyloma.

2. Retinal atrophy, degeneration, hemorrhage and hole: due to factors such as lengthening of ocular axis and posterior scleral staphyloma, patients with high myopia are prone to retinal degeneration and hole, resulting in hemorrhage and retinal detachment, leading to blindness.

3. Subretinal neovascularization: the incidence is 5% – 40%. It is manifested as subretinal neovascularization in the posterior pole, causing bleeding and affecting vision.

4. Retinal detachment: cystic degeneration and lattice degeneration often occur in the peripheral part of the retina due to the elongation of the axis of myopia and intraocular dystrophy. The retina in the degenerative area is very thin and is prone to perforation. Some have been perforated and formed in sexual holes. In addition, vitreous liquefaction and increased mobility lead to retinal detachment. In retinal detachment, 70% are myopia.

5. Glaucoma: due to the abnormal structure of the filter curtain at the atrial angle of myopia, the outflow resistance of aqueous humor in the eye is large, which is easy to cause the increase of intraocular pressure. According to statistics, 30% of high myopia have glaucoma, which will cause the gradual loss of vision.

6. Cataract: due to abnormal nutritional metabolism in myopia, the permeability of lens capsule changes, lens nutritional disorder and metabolic disorder gradually produce turbidity, and vision gradually decreases, resulting in concurrent cataract. This kind of cataract develops slowly, mainly core opacity and posterior capsule opacity.

summary

nowadays, the prevalence of high myopia is very high, about 1%, and the incidence of adolescents is more concentrated. High myopia often has a variety of pathological changes in the fundus, such as vitreous opacity, fundus hemorrhage, and severe retinal detachment, resulting in blindness. Therefore, patients with particularly obvious vision loss should pay special attention to the following three common complications of high myopia:

flying mosquito disease

people with this disease often have dark shadows floating in front of their eyes with the rotation of their eyes, just like mosquitoes and flies flying, which is due to the liquefaction of the normal colloidal structure of the vitreous body.

macular hemorrhage

people with high myopia will cause metabolic disorders in the normal relationship between fundus retina and choroid tissue due to the continuous traction of the eyeball wall due to the enlargement of the eyeball, especially when the small blood vessels in the macular area rupture due to traction and other factors, it will cause macular hemorrhage and greatly damage the central vision. At this time, the patient realized that there was a fixed shadow blocking his line of sight. Although the bleeding can be absorbed after treatment, it will always leave blood marks more or less, affecting vision.

retinal detachment

is a serious complication with complex causes. From the internal cause, the retinal tissue of patients with high myopia becomes fragile due to degeneration and atrophy, which is very easy to make retinal detachment and blindness. The external cause is mainly the sudden impact of external force, which promotes retinal rupture through vitreous conduction, resulting in retinal detachment and blindness.

in addition, when people with high myopia suddenly suffer from visual impairment and have dark shadow fluttering in front of them, especially when they have a flash like lightning or feel that there is a fixed dark shadow covering in front of them, they should go to Hefei Purui ophthalmic hospital for examination as soon as possible, which may be a precursor of diseases such as retinal detachment or macular hemorrhage.

retinal atrophy and degeneration

patients with high myopia are prone to retinal degeneration and holes, resulting in bleeding and retinal detachment, leading to blindness due to factors such as longer eye axis and posterior scleral staphyloma.

the incidence of subretinal neovascularization

is 5% – 40%. It is manifested as subretinal neovascularization in the posterior pole, causing bleeding and affecting vision. The incidence of scleral staphyloma

and

after

and

was 77.1%. The main manifestations were posterior expansion of the posterior pole of the eyeball, degeneration and atrophy of the optic nerve and perimacular retina, and decreased corrected visual acuity. The higher the degree of myopia, the higher the incidence of posterior scleral staphyloma.