Abstract: when the eyeball is in a static state, the equal light from 5 meters away passes through the refraction of the eye, and the focus just falls on the retina, which can form a clear image. The eye with this refractive state is called emmetropia.
there are 400 million people with myopia in China, and the myopia rate is about 1.5 times of the world level. And the number is still soaring, so what is myopia? How does myopia happen? Today, Xiaobian will talk with you about myopia!
I believe every “four eyes” will have such distress:
five meters away, six relatives don’t recognize
ten meters away, men and animals don’t distinguish
100 meters away. If you want to see yourself without glasses, you have no choice but to take a selfie.
1 why can’t myopia see clearly?
when the eyeball is in a static state, the equal light from 5 meters away passes through the refraction of the eye, and the focus just falls on the retina, which can form a clear image. The eye with this refractive state is called emmetropia. The focus of
falls in front of the retina and cannot accurately form a clear image on the retina, which is called myopia.
why do people have myopia?
the cause of myopia is still unknown. Is it genetic? Or environmental factors? Scientists have debated for decades and still haven’t reached an authoritative conclusion.
fortunately, people still understand why light does not focus on the retina after entering the eyes of myopia patients, but in front of the retina.
this is caused by two reasons:
1 The eye axis of myopia patients is too long (you can also understand it as too long eyeball)
the retina retreats because the eye axis becomes longer, which can not coincide with the position of light focus.
2. The state of cornea and lens of myopia patients changes.
In some people, the length of his eye axis is normal, but the state of the cornea and lens responsible for refraction has changed, focusing the image that should have been focused on the retina in front of the retina.
remember! Eye exercise can’t cure myopia! Can only be relief!
too long ocular axis (the main cause of myopia) is an irreversible process. As long as the ocular axis becomes longer, it will not automatically change back.
Therefore, no matter what eye exercise, whether it’s eye massage or looking into the distance. There is no way to shorten the long eye axis, restore the wrong refraction cornea and lens, and restore your myopia.
have thousands of treatment methods for myopia on the network, including food therapy, massage, acupuncture and so on.
however, there is no scientific basis to prove the effectiveness of these so-called methods for the treatment of myopia!