Abstract: 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.
high myopia refers to myopia with more than 6 diopters, that is, myopia with more than 600 degrees. Generally, the optic axis of patients is quite long, and it will be deepened due to acquired factors or congenital inheritance. Therefore, the incorrect eye use method must be corrected and eye repair surgery must be carried out in time to effectively prevent the further decline of vision.
common complications of high myopia:
1. The incidence of
of posterior scleral staphyloma 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.
II. Retinal detachment
due to the elongation of ocular axis and intraocular dystrophy in myopia, cystic degeneration and lattice degeneration often occur around the retina. The retina in the degeneration 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.
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.
due to abnormal intraocular 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.
high myopia should pay attention to the low vision of
high myopia, which is difficult to correct, and it is often intolerable to wear fully corrected glasses. Therefore, low correction should be carried out when matching glasses, so as to improve the vision and maintain comfort. There is no need to pursue the best corrected vision. Wearing corneal contact lenses (i.e. contact lenses) to correct visual acuity for high myopia is better than ordinary glasses, and can reduce the prism effect of ordinary glasses, limited visual field and other discomfort.