Myopia is becoming "universal".
At present, among children and adolescents in our country.
One in two people is nearsighted.
The myopia rate among college students is close to 90%.
The troubles of myopia are countless:
If you forget your glasses, you're blind.
Affect appearance. It was said to be cold.
Getting off the mirror in the summer has a tattoo.
In winter, the water mist is caused by heat.
It may be that the myopic population is too large.
Or the truth that myopia will accompany you for life is too cruel.
There has always been one among the people.
A "rumor" that comforts the army of myopia
Myopia is the lack of clear vision.
Presbyopia is not clear when it is close to it.
If you have presbyopia.
Just cancel each other out.
Sounds reasonable, doesn't it?
So. Is this rumor true?
Let's find out first.
The essence of myopia and presbyopia.
The essence of myopia and presbyopia.
The eye is a very important organ, and about 80% of the external information we obtain is obtained through vision.
One of the important tissues inside the human eye, the lens, can flexibly and quickly focus on objects with different fields of view, just like the focusing lens of a camera.
What is "myopia"?
Myopia is a type of refractive error. When the eye is in a relaxed state, parallel light enters the eye, and the focus falls on the retina, resulting in a clear image on the retina. The occurrence of myopia is related to many factors such as genetics, development, and environment, but the exact pathogenesis is still being studied.
The most well-known symptom of myopia is that it is basically normal to see near and blurry vision to see far away. As the degree of myopia increases, it will also be accompanied by visual obstruction, visual distortion, floaters and other visual symptoms.
What is "presbyopia"?
Presbyopia (presbyopia) is a physiological phenomenon that is not a pathological condition or a refractive error. As we age, the lens becomes more flexible, less elastic, less accommodative, and less contractile of the ciliary muscle, resulting in difficulty in seeing near and near with the focus behind the retina.
The main manifestations are blurred near reading, eye fatigue, soreness, tearfulness, photophobia, and headache.
Although there is a "old" word in the name, presbyopia is not only for the elderly. After the age of 40, most people begin to develop presbyopia.
It can be seen that there is a clear difference between the two.
They don't even have the same principle of getting sick!
What?Don't get it?
Here's the point!
What is the difference between presbyopia and myopia?
1.The pathology is different
Myopia is mostly caused by abnormal anterior and posterior diameter of the eyeball, while presbyopia is entirely due to the decreased refractive ability of the lens.
2.Typical symptoms vary
Myopia is the ability to see near objects clearly, but not to see far clearlyPresbyopia, on the other hand, is the fact that it is not clear what is near and what it is far away from.
3.The multi-incidence groups are different
Myopia often occurs in adolescents, while presbyopia generally occurs in middle-aged and elderly people.
Figure out these two.
Let's talk about it.
Nearsightedness. Is it true that it won't be presbyopia?
Presbyopia + myopia = ?
Presbyopia. It's a catastrophe that you and I can't escape.
As we age, people slowly age, and so do our eyes. People can not be short-sighted, but they can't escape presbyopia, the appearance of "presbyopia", may be late, but will not be absent, everyone can not avoid it.
Myopia and presbyopia.
It cannot be offset. 
Again, myopia is due to refractive error, while presbyopia is the degeneration and loss of elasticity of the lens, which are fundamentally different pathologically, so they cannot be counteracted!
Although presbyopia "late but arrived".
But on this issue.
Not everyone is on the same starting line.
If you are not nearsighted.
When presbyopia appears.
Then prepare a pair of reading glasses.
If you are nearsighted.
Then the situation is a little more complicated.
The degree of myopia and presbyopia need to be considered comprehensively.
If you have mild myopia, your presbyopia will be slightly lighter than in the average patient, and you may not need to wear glasses when you see near at first. However, as you age, you may still need to wear reading glasses.
If you are highly myopic and have presbyopia, you may face the problem of "you can't see far and near clearly", so you need to prepare two pairs of glasses with different prescriptions to adapt to the situation.
So don't leave it to chance because you're nearsighted.
Be careful when you get old.
A pair of nearsighted glasses on the left hand.
A pair of reading glasses on the right hand.
Life is so unfriendly to myopia!
So what other reason do you have.
Why don't you take good care of your eyes?
Eye care tips. 01 Blink often.
In life, many people are Xi to mobile phones and tablets without leaving their hands, staring intently at electronic screens. This will reduce the number of blinks, causing dry and tired eyes.
In fact, with every blink, the tear film covers the surface of the eyeball, keeping the eye moist and reducing tear evaporation. Therefore, we might as well make good use of this natural "humectant" and blink more.
02 Appropriate overlook.
After reading a book or reading a newspaper for a period of time, you can look far away and look at the green vegetation outside the window to relax your eyes.
03 Rational use of eyes.
Whether you are reading a book, watching TV or using electronic products, the time should not be too long to avoid eye fatigue. At the same time, closing your eyes is also good for your eyes.
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