How much do you know about myopia~

Abstract: naked eye vision: the visual acuity level measured by the visual acuity test light box under normal light; Reflect a person’s true vision level. Naked eye vision is measured in military physical examination, school physical examination and other visual examinations!

I. about myopia

what is myopia:

when the eyeball is adjusted and stationary, the balanced light from 5 meters away is refracted by the refractive system of the human eye, and the focus falls in front of the retina, which can not accurately form a clear image on the retinal membrane, which is called myopia.

classification of myopia:

judgment method of naked vision, corrected vision and diopter:

naked vision: the visual acuity level measured by the visual acuity test light box under normal light; Reflect a person’s true vision level. Naked eye vision is measured in military physical examination, school physical examination and other visual examinations!

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corrected visual acuity: that is, the visual acuity measured with glasses; If the corrected visual acuity measured is lower than that at the beginning of matching glasses, it means that the visual acuity has decreased again!

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diopter: that is, the degree of myopia we talk about everyday. The diopter can be determined through mydriasis and computer optometry.

II. The harm of myopia

the development of visual organs is basically completed from birth to the age of 18, tends to be stable at the age of 24, and the development peak of children’s myopia is from 8 to 14 years old. According to the survey of the Bureau of statistics, the current situation of low vision of Chinese students is worrying. The myopia rate increases with the age of children, 46% in primary school, 60% in middle school, 85% in high school, and almost all universities are destroyed. Harm caused by

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myopia:

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lack of visual information to stimulate unbalanced development of the brain.

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have long-term narrow external space perception limitations, which affect mental health. The degree of

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continues to deepen, leading to rational myopia.

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wear glasses for a long time, resulting in deformation of both eyes, which affects the appearance of

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in school Join the army and find a job blocked

structural myopia, inherited to future generations

Ten Signs of myopia:

warm tip: if there is the above situation, we must pay attention to it. You are nearsighted and need to recover in time!

III. Prevention and control of myopia

treatment principles of myopia: prevention and control of

at present, there is no cure for myopia, but myopia can be prevented and controlled, but the key is one word: early! We should achieve early prevention, early detection and early treatment. The current medical level of

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can not accurately predict the development of myopia, but there are always some rules to follow.

for example, children with two or more conditions who have high myopia or early myopia age in both or one of their parents will have obvious genetic constitution of myopia and high susceptibility to myopia. Affected by the adverse external environment will be more obvious, and the probability of developing into high myopia or even pathological myopia will be higher in the future!

therefore, it is the most fundamental and important to take active measures to prevent and control the development of myopia.