myopia reversal training has a phenomenon that has to be said, that is, flash. The so-called flash is not the flash method understood by most friends, because flash is not a method, but just a phenomenon. In fact, it is a phenomenon that myopia will suddenly become clear after continuously blurring at the same distance and at the same time. This clarity has a range, and the specific range should vary from person to person, My estimate is 50 to 100 degrees. So, let’s say you’re 300 degrees. After 5 minutes of blurring, you find that your eyes suddenly become clear! At that time, your eyes were temporarily reduced by 50 degrees. In those seconds, your eyes were in a state of 250 degrees, but they blurred again after a while! This sudden, brief clarity and then re blurring is the key flash through all our degrees reversal stages.
according to my experience and inference, various elements of flash will change according to the degree. The higher the degree, the more difficult the flash will be and the shorter the time will be. The lower the degree, the easier the flash will be and the longer the duration will be. I believe all friends who reverse will experience this phenomenon. This phenomenon is actually the reason why many people always feel unstable vision in the reversal stage. Because many people who feel unstable have reversed to about 100. At this degree, their flashes will be extremely easy and frequent. They can flash by blinking and looking at something a little, and the clarity after the flash will last for a long time rather than a few seconds at medium height. After flashing, it returns to a fuzzy state, sometimes even more blurred than usual, which makes people feel that their eyesight is unstable. How can it be better and worse? This is the flash range. In fact, high-altitude people will have this ordinary degree fluctuation, but he doesn’t feel so obvious. This is because the higher the degree, it is insignificant to increase or decrease 50 to 100 degrees. Many people above 600 degrees should know that looking with a 100 degree mirror feels the same as not. But you feel much better when you lose 50 degrees from 100 degrees.
let’s talk about why the eyes flash. Let’s first look at the structure of the eyeball. The eyeball is mainly cornea, lens, vitreous and retina from outside to inside. The cornea is the lens of a camera. The cornea is completely transparent without blood vessels. Its nutrition mainly comes from tears, aqueous humor and oxygen in the air. Every time you blink, tears will cover the corneal surface with a tear film to provide the necessary nutrition for the cornea. Therefore, it is unwise to train without blinking. This is why the more you use your eyes, the better. If you don’t use your eyes, you won’t blink. If you don’t blink, your cornea won’t get enough nutrition. In addition, I feel dry every morning because the cornea is neither moistened by tears nor oxygen in the air. Tears also have a bactericidal effect. Crying more is good for the eyes. Wearing contact lenses will make the cornea get less nutrition. Of course, it’s easy for the eyes to dry. Behind the cornea is the lens. Only after passing through the cornea and being adjusted by the lens can all light accurately fall on the retina for imaging. Because the lens is a biconvex transparent tissue, the light is an inverted image in the retina after twice refraction, but the final imaging still needs to be transmitted to the brain for analysis through nerves, so the inverted image is adjusted to a positive image by the brain. The vitreous body is behind the lens. It is a colorless transparent colloid. This thing is mainly used to fix the retina. Without it, your retina will fall off and then you will be blind. If the vitreous is turbid or liquefied, you will have floaters. Flying mosquito disease can only be treated by mentality therapy. It’s OK to do less or not do things that aggravate flying. For example, watching mobile phones at night. The important thing is that continuous depression can only aggravate flying mosquitoes. Behind the vitreous body is our retina. The retina is like a photosensitive film in a camera, which is responsible for photosensitive imaging. The cone cells inside are responsible for color discrimination, and the rod cells are responsible for light sensitivity.
understand the general structure of the eyeball, that is, the principle of myopia formation and reversal. I have to talk about the experiment of small hole imaging first. For a lighted candle, put a plate in front and make a small hole in the middle. Note that the plate must be much larger than the candle. It must completely cover the candle. Put a piece of paper behind the plate. We can see that the inverted image of the candle will be reflected on the paper. Adjust the position of the plate, the size of the imaging will also change, and the larger the imaging, the more blurred it will be, The smaller the, the higher the resolution. This experiment fully shows that light propagates along a straight line, but I think a more important problem explained by this experiment should be that a light spot propagates in a straight line in all directions! Note that if a light spot only propagates along a straight line, it is impossible to reflect the full image of the candle on the paper. It can be inferred that there can only be an image as large as a small hole on the paper, and it is difficult to see the image of the candle. This is because the paper has a low reflection of light. You must see it clearly when you put the mirror behind the board. Even if you take the board, the mirror will reflect the image of the candle, If you take away the board, there will be no candle on the paper, because we all know that paper can’t be used as a mirror. The paper can reflect the candle image behind the hole of the board because the light spots of the candle are scattering and will pass through the small hole. The light after passing through the small hole will gather on the paper due to refraction and will have a lot of overlap. Finally, the intensity of the candle light reflected on the paper is strengthened, so that we can see the candle image on the paper. We use a flashlight to illuminate the paper, and there will also be a white spot on it. That is because the light of the flashlight is too strong. Although the paper does not reflect the electric light, the reflected light can still be seen by us. In short, I think the experiment of small hole imaging really shows too many problems, and the focusing of magnifying glass is also the reason. Our eyeballs are so small, why can we see such a big object? That’s because our eyes are imaging in small holes all the time. Things larger than the eyeball are normally imaged on the retina after being adjusted through the combined force of cornea, lens and vitreous. Here, the lens is the main force of adjustment. The lens is a biconvex. It mainly allows the image to be reflected on the retina by changing the curvature of the two convex surfaces, that is, the concave convex degree. Although the two convex surfaces are elastic, they cannot automatically change the curvature, which is controlled by the ciliary muscle. When we look far away, the ciliary muscle will relax naturally. At this time, the suspensory ligament for positioning the lens will tighten and the crystal will become flat. When you look close, the ciliary muscles will tense, the suspensory ligament will relax, and the lens will disappearIf you look at a piece, the words will become clearer in a short time, indicating that flashing is the nature of ciliary muscle. But normal people can see clearly without flashing, so there is no saying of unstable vision. And what about high-altitude people? In fact, he often flashes, but if he sees it with his bare eyes, it is still so vague for dozens of degrees, which is equal to no flash. Therefore, people with high altitude do not feel that there is any visual instability. It has always been very vague and not unstable. For low-level people, you can feel it immediately by adding or subtracting 50 degrees. The reason can also be explained by small hole imaging. It is a thousand miles away. This is the refraction of light.
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