Abstract: 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., I. the harm of high myopia. The prevalence of high myopia is very high, about 1%. High myopia can cause many serious complications, most of which will cause blindness. It is one of the common causes of blindness in adults, accounting for the sixth place in blinding diseases in China. The main complications are: 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., II. The harm of high astigmatism. The cause of astigmatism is incorrect corneal radian. Most of them are congenital, but individual eyelid long chalazion will also appear astigmatism after long-term compression of the eyeball. Astigmatism is myopic hyperopia, or one path is hyperopia, and the other path is myopic so-called mixed astigmatism. If high astigmatism is not corrected, it is easy to cause headache, eye acid and other phenomena, as well as bad posture such as crooked head; Therefore, those with severe astigmatism must be corrected. Astigmatism is usually corrected with ordinary glasses or contact lenses. Astigmatism is generally congenital, but there are also acquired individual reasons that can cause strabismus. The simplest example is; Trauma and long chalazion on the eyelid are not treated in time, which oppresses the eyeball for a long time and causes the harm of astigmatism. In some cases, astigmatism will also be combined with pseudomyopia. At this time, the part of pseudomyopia should be removed and astigmatism should be corrected with glasses.,
1. The harm of high myopia
the prevalence of high myopia is very high, about 1%. High myopia can cause many serious complications, most of which will cause blindness. It is one of the common causes of blindness in adults, accounting for the sixth place in blinding diseases in China. The main complications were:
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 the lengthening of ocular axis, posterior scleral staphyloma and other factors, patients with high myopia are prone to retinal degeneration and hole, resulting in hemorrhage and retinal detachment, leading to blindness.
II. The harm of high astigmatism
astigmatism is caused by incorrect corneal radian. Most of them are congenital, but individual eyelid long chalazion will also appear astigmatism after long-term compression of the eyeball. Astigmatism is myopic hyperopia, or one path is hyperopia, and the other path is myopic so-called mixed astigmatism. If high astigmatism is not corrected, it is easy to cause headache, eye acid and other phenomena, as well as bad posture such as crooked head; Therefore, those with severe astigmatism must be corrected. Astigmatism is usually corrected with ordinary glasses or contact lenses. Astigmatism is generally congenital, but there are also acquired individual reasons that can cause strabismus. The simplest example is; Trauma and long chalazion on the eyelid are not treated in time, which oppresses the eyeball for a long time and causes the harm of astigmatism. In some cases, astigmatism will also be combined with pseudomyopia. At this time, the part of pseudomyopia should be removed, and astigmatism should be corrected with glasses.