How many degrees is high myopia? What troubles may it cause?

Abstract: due to the average increase of myopia by 300 degrees, the length of anterior posterior diameter of eyeball will increase by about 1mm. Therefore, as the degree increases, the eyeball will become longer and longer, making the eyeball wall thinner and thinner. How many degrees of

is high myopia?

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generally regard myopia of more than 600 degrees as high myopia;

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also define high myopia when the equivalent spherical mirror exceeds 800 degrees. The so-called equivalent sphericity of

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is obtained by adding half of the myopia and astigmatism (equivalent sphericity = myopia + 1 / 2 astigmatism). Because many people with myopia have astigmatism, the use of equivalent spherical lens can better reflect a person’s real refractive state.

high myopia, what trouble may it bring?

due to the average increase of myopia by 300 degrees, the length of anterior posterior diameter of eyeball will increase by about 1mm. Therefore, as the degree increases, the eyeball will become longer and longer, making the eyeball wall thinner and thinner. Accordingly, the choroid and retina will become thinner, which will greatly increase the risk of blind eye diseases such as retinal detachment, maculopathy and glaucoma. Some problems such as

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are difficult to avoid. We can only try to find out and start treatment as soon as possible through regular inspection of the fundus.