Abstract: ametropia includes hyperopia, myopia and astigmatism. At present, myopia is the main problem of ametropia in China. At present, the incidence of myopia in China is nearly 429 million, and the number is increasing, and there are more and more people with high myopia!
ranked first among the high incidence diseases in the first half of 2017. Among them, the vast majority of ophthalmic patients show ametropia. In addition, they also include conjunctivitis, high intraocular pressure, cataract, retinal arteriosclerosis and so on. Ophthalmic diseases have become “national diseases”.
both men and women have a high proportion of refractive errors in their eyes. It has also become the most feared health problem for men.
ametropia include hyperopia, myopia and astigmatism. At present, myopia is the main problem of ametropia in China. At present, the incidence of myopia in China is nearly 429 million, and the number is increasing, and there are more and more people with high myopia!
be careful! High myopia is easy to cause fundus disease
high myopia refers to a kind of ametropia with myopia degree greater than 600 degrees, often accompanied by degenerative diseases such as eye axis elongation, fundus retina and choroid atrophy. It is a kind of pathological myopia with more complications. It is one of the common blinding eye diseases.
high myopia fundus lesions may cause the following complications:
posterior scleral staphyloma: the incidence was 77.1%. Eyeball dilation causes posterior scleral staphyloma, thinning and atrophy of retina. When the atrophy involves the macula, macular hemorrhage and holes can appear, the visual acuity is seriously reduced, and there is a central fixed dark spot. The higher the degree of myopia, the higher the incidence of posterior scleral staphyloma.
subretinal neovascularization: the incidence is 5% – 40%. It is manifested as subretinal neovascularization in the posterior pole, causing bleeding and affecting vision.
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, causing hemorrhage and retinal detachment, leading to blindness.
retinal detachment: the main manifestations are sudden blurred vision, deformation and dark shadow occlusion, which can lead to blindness in severe cases. Once the retina is detached, surgery is needed immediately to avoid further deterioration of vision. The chance of retinal detachment in patients with high myopia is 7-8 times higher than those without high myopia.
glaucoma: according to statistics, many people with high myopia will develop glaucoma, and glaucoma is the second blinding eye disease at present, which is characterized by high intraocular pressure, progressive decline of vision and narrowing of visual field. Studies have shown that the incidence rate of high myopia with open angle glaucoma is 6-8 times higher than that of normal eyes.
cataract: high myopia is easy to be complicated with cataract. People with high myopia will have cataract early, and the effect of cataract surgery is worse than those without a history of high myopia.
therefore, people with high myopia should have a physical examination of fundus, intraocular pressure and diopter at least once a year to avoid blindness caused by serious complications.
so, how should myopia be protected?
myopia suggestions for children and adolescents: glasses and corneal shaping lenses
children under 12 years old should determine true and false myopia after mydriatic optometry. False myopia can be recovered through self-regulation, while true myopia needs medical optometry and glasses under the guidance of professional doctors, Irregular glasses usually deepen the degree of myopia.
teenagers under the age of 18 can choose ordinary frame glasses or corneal shaping glasses for myopia. Although ordinary frame glasses can make children see clearly, they can not effectively control the growth of myopia. The corneal shaping lens, by wearing it at night and taking it during the day, can not only restore children’s normal vision during the day, but also carry out normal learning and life without wearing glasses, but also effectively control the growth of myopia.
adult myopia suggestion: myopia correction surgery
myopia surgery has a history of nearly 40 years. With the continuous progress of medical technology, the whole process femtosecond laser treatment is adopted for myopia surgery, which can be completed in 5 minutes. It will not affect normal life, learning and eye use after surgery. If the thickness of cornea is appropriate and the depth of anterior chamber is enough, patients with myopia (especially those with high myopia) can also choose ICL intraocular lens implantation.