Abstract: the difference between pseudomyopia and true myopia lies in the contraction and relaxation of the ciliary muscle. The problem of myopia is that the ciliary muscle has been in a highly tired and tense contraction state for too long. When looking far, it can not relax. The object imaging can only focus in front of the retina, and it is unclear when looking far, The human eye is like a camera system. The cornea and lens are equivalent to the lens of the camera. The retina is like the film of the camera. Under normal circumstances, the parallel light five meters away can focus on the retina through the normal cornea and lens to form a point, so that we can see clearly, which is the emmetropia., Myopia is caused by changes in the curvature of the cornea or lens. The parallel light cannot focus on the retina and can only focus in front of the retina. It is impossible to see things far away, but only objects near. This is myopia., When it comes to true myopia and false myopia, we have to mention a part of our eyes. Under normal circumstances, the eyes can see close and far thanks to its ciliary muscle. The function of ciliary muscle is reflected in: when we look far away, it relaxes. After relaxation, the lens becomes thinner, the curvature of the lens changes, and the light focuses on the retina; When you look close, the ciliary muscle contracts, and the lens thickens after contraction. When it thickens, it is equivalent to a convex lens, which can focus the image of the object on the retina. It can be understood that the ciliary muscle is equivalent to the focusing function on the camera., The difference between pseudomyopia and true myopia lies in the contraction and relaxation of the ciliary muscle. The problem of myopia is that the ciliary muscle has been in a highly tired and tense contraction state for too long. It can’t relax when looking far. The object imaging can only focus in front of the retina and look far in an unclear state. If it is pseudomyopia, The ciliary muscle can’t relax for a while, but perhaps it can relieve eye fatigue through drug or physical relaxation. After a period of rest, the ciliary muscle can relax and adjust normally, just like a rubber band stretched for a long time. If enough rest is enough to restore elasticity, this is a state of pseudomyopia., But true myopia is an irreversible process – the ciliary muscles are too tired to recover through drugs or other methods, and can no longer relax when looking far away. This is true myopia. If you don’t pay attention to using your eyes, pseudomyopia will also evolve into true myopia., How to distinguish true and false myopia?, Dr. Qiu Xuan suggested that if children’s eyesight is found to be decreased, they should go to the hospital for examination in time. Generally, teenagers under the age of 18 need mydriatic optometry. The medicine for mydriatic eye drops is actually a cycloplegic agent, which can paralyze the ciliary muscle through drugs to relax it. If the optometry also measures a certain degree, it means that the ciliary muscle cannot relax, indicating that it is true myopia. If the ciliary muscle is relaxed and a very low degree or no degree is measured, it means that it is pseudomyopia., The emergence of electronic products makes children’s myopia tend to be younger.
human eyes are like a camera system, the cornea and lens are equivalent to the lens of the camera, and the retina is like the film of the camera. Under normal circumstances, parallel light five meters away can focus on the retina through the normal cornea and lens to form a point, In this way, we see things clearly, which is the front eye.
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myopia is because the curvature of the cornea or the curvature of the lens has changed. The parallel light can not focus on the retina, but can only focus in front of the retina. You can’t see far things clearly, but only near objects. This is myopia.
when it comes to true myopia and false myopia, we have to mention a part of our eyes. Under normal circumstances, the eyes can see close and far thanks to its ciliary muscle. The function of ciliary muscle is reflected in: when we look far away, it relaxes. After relaxation, the lens becomes thinner, the curvature of the lens changes, and the light focuses on the retina; When you look close, the ciliary muscle contracts, and the lens thickens after contraction. When it thickens, it is equivalent to a convex lens, which can focus the image of the object on the retina. It can be understood that the ciliary muscle is equivalent to the focusing function on the camera. The difference between
and
pseudomyopia and true myopia lies in the contraction and relaxation of the ciliary muscle. The problem of myopia is that the ciliary muscle has been in a highly tired and tense contraction state for too long. When looking far, it can not relax. Object imaging can only focus in front of the retina, and it is unclear when looking far. If it is pseudomyopia, The ciliary muscle can’t relax for a while, but perhaps through drug or physical relaxation to alleviate eye fatigue. After a period of rest, the ciliary muscle relaxes and can be adjusted normally, just like a rubber band stretched for a long time. Rest is enough to restore elasticity. This is a state of pseudomyopia.
true myopia is an irreversible process – ciliary muscle is too tired to recover through drugs or other methods, and can no longer relax when looking far away. This is true myopia. If you don’t pay attention to using your eyes, pseudomyopia will also evolve into true myopia.
how to distinguish true and false myopia? Dr. Qiu Xuan of
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suggested that if children’s eyesight is found to be decreased, they should go to the hospital for examination in time. Generally, teenagers under the age of 18 need mydriatic optometry. The medicine for mydriatic eye drops is actually a cycloplegic agent, which can paralyze the ciliary muscle through drugs to relax it. If the optometry still measures a degree, it means that the ciliary muscle cannot relax, indicating that it is true myopia. If the ciliary muscle is relaxed and a very low degree or no degree is measured, it means that it is pseudomyopia. The emergence of
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electronic products makes children’s myopia tend to be younger. The
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eyes will be deformed, which is not caused by wearing glasses “I met a lot of patients with pseudomyopia in the outpatient department, especially at the beginning of school physical examination, many children had poor vision. Many of them were due to the tension of ciliary muscle regulation. They would find that there was no degree during mydriasis optometry in the hospital. For example, some children had only 0.2 or 0.3 naked eye vision, but they could be measured to be only 50 degrees myopia. It is recommended not to wear glasses first, but pay attention to the use of eyes, or use them properly Use ciliary muscle paralysis agent and drop eyes every night before going to bed to relax the ciliary muscles。”
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for many parents’ concerns about when to wear glasses, Dr. Qiu Xuan said that if they are diagnosed with true myopia, they should consider glasses. The first purpose of glasses is to make the eyes see clearly, especially children under the age of 6 are still in a key period of eye development, and hazy vision may lead to growth retardation and amblyopia, Second, wearing glasses can make the corrected vision reach normal. At this time, the purpose of wearing glasses is to see clearly, and the eyes are not easy to fatigue, so as to prevent the deepening of myopia.
“Some parents worry that their children’s eyes will be deformed if they wear glasses too early. In fact, the eye deformation is not caused by wearing glasses, but the eye axis of some myopia patients becomes longer, which shows that the eyeball gradually protrudes forward, especially pathological myopia. If the degree is low, you can follow the doctor’s advice and wear glasses only when you are far away from your eyes. You don’t wear glasses temporarily when you are looking at near objects, sports activities and outdoor activities Glasses. ”