Abstract: vitreous liquefaction is a colorless transparent jelly. When the eyeball of myopia increases, the vitreous body will not increase again, so the vitreous body can not fill all the space in the eye, resulting in liquefaction, increased mobility and turbidity, causing dark shadow in front of the eyes and inducing retinal detachment.
generally myopia will not develop in adulthood, and those who continue to develop after the age of 25 are called progressive myopia. In terms of diopter, those who exceed 6.0d (600 degrees) are called high myopia.
what diseases can be complicated by high myopia?
almost all high myopia have axial growth and significant thinning of sclera at the posterior pole of the eye. The main pathological changes are atrophy and thinning of retina and choroid, which are aggravated year by year. Therefore, it produces many serious complications, most of which can cause blindness. It is the sixth blinding disease in China.
macular hemorrhage and macular degeneration myopia have poor eye blood supply, retinal ischemia, and the retina produces a kind of neovascular growth factor. These factors make the subretinal neovascularization grow. These neovascularization tube walls are very thin and easy to rupture and bleed. Macular hemorrhage is formed after bleeding. After the bleeding is absorbed, the new blood vessels can rupture and bleed again. After multiple bleeding, short marks are formed locally, causing macular degeneration, which permanently damages vision.
vitreous liquefaction degeneration vitreous is colorless transparent jelly. When the eyeball of myopia increases, the vitreous body will not increase again, so the vitreous body can not fill all the space in the eye, resulting in liquefaction, increased mobility and turbidity, causing dark shadow in front of the eyes and inducing retinal detachment.
retinal detachment is the most common complication of myopia. Due to axial elongation and intraocular dystrophy in myopia, cystic degeneration and lattice degeneration often occur around the retina. The retina in the degenerative area is very thin and 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.
cataractous myopia has abnormal intraocular nutrition metabolism, which changes the capsular permeability of the lens, gradually produces turbidity due to dystrophic and metabolic disorders of the lens, and gradually reduces vision, resulting in concurrent cataract. This kind of cataract develops slowly, mainly core opacity and posterior capsule opacity.
warm tips: as there are many complications of high myopia, which can seriously affect visual function, it is recommended to go to professional ophthalmology for examination on a regular basis, so as to achieve early detection and treatment