Abstract: when children or teenagers read or write, the distance between their eyes and books or words is often less than 33 cm, and their visual angle is not 90 degrees from the desktop (or writing), or lying reading can cause pseudomyopia., Pseudomyopia: teenagers and children do not pay attention to reading or writing eyes or lack of lighting and other factors, so that the ciliary muscle is often in a continuous tense contraction state, resulting in ciliary muscle spasm and decline of regulatory function. After the strong flexion of convex lens, its focus no longer falls on the retina, but falls in front of the retina, resulting in blurred viewing; If the spasm of ciliary muscle is relieved, the lens can be flattened and the object image can be clearly formed on the retina. It is called pseudomyopia in medicine., Reasons for the formation of pseudomyopia: 1. Unscientific use of eyes for a long time: when children or teenagers read or write, the distance between their eyes and books or words is often less than 33 cm, and their angle of view is not 90 degrees from the desktop (or writing), or lying reading can cause pseudomyopia. 2. In addition, if you don’t pay attention to rest or study after using your eyes for a long time, the poor lighting can also cause pseudomyopia., 2. Lack of eye nutrition: many children and adolescents are picky and partial eaters, and do not often eat vegetables, fruits, bean products, coarse grains and other foods. This habit can lead to the lack of vitamin A, vitamin B1, vitamin B12, vitamin C, vitamin E, vitamin D, chromium, calcium, zinc and other elements in their bodies, so they are prone to pseudomyopia., 3. Too much stimulation by light and color: if children and teenagers often go to game halls, song and dance halls and other entertainment places or surf the Internet for a long time, their eyes will be stimulated by light, color and other physical and chemical stimuli in these places, so they are prone to pseudomyopia. The treatment of ametropic amblyopia is not timely: some children or adolescents with ametropic amblyopia will also be caused if they are not treated in time., 4. Pseudomyopia is generally due to long-time and close work, poor eye posture, lying on the table, lying in bed or reading in a turbulent and unstable carriage, too strong and too weak light, which often makes the ciliary muscles of the eyes in a tense and tired state, resulting in vision loss., 5. Most people suffering from pseudomyopia are unsanitary with their eyes, especially primary and secondary school students. Their eyesight decreases rapidly in one or two months or even weeks. If they are treated in time at an early stage and pay attention to maintenance, their eyesight can be recovered without wearing glasses. Pseudomyopia is only the abnormality of eye adjustment function. This change is reversible. Correct the bad eye habits in time, and then cooperate with the treatment method to alleviate eye muscle fatigue, the vision can be completely recovered. Mixed myopia, which accounts for the vast majority of juvenile myopia, is in the process of evolution from functional abnormality to structural abnormality. The process of deepening the degree of myopia is the process of changing the false components of mixed myopia into true myopia., Prevention method:
pseudomyopia: teenagers and children often have continuous tense contraction of ciliary muscle due to factors such as inattention to reading or writing eyes or insufficient lighting, resulting in spasm of ciliary muscle and decline of regulatory function. After strong flexion of convex lens, its focus will no longer fall on the retina, but in front of the retina, Cause things to be blurred; If the spasm of ciliary muscle is relieved, the lens can be flattened and the object image can be clearly formed on the retina. It is called pseudomyopia in medicine. Reasons for the formation of
pseudomyopia:
1. Unscientific eye use for a long time: when children or teenagers read or write, the distance between their eyes and books or words is often less than 33 cm, and their angle of view is not 90 degrees from the desktop (or writing), or lying reading can cause pseudomyopia. In addition, if you don’t pay attention to rest or study after using your eyes for a long time, the poor lighting can also cause pseudomyopia.
2. Lack of eye nutrition: many children and adolescents are picky and partial eaters, and do not often eat vegetables, fruits, bean products, coarse grains and other foods. This habit can lead to a lack of vitamin A, vitamin B1, vitamin B12, vitamin C, vitamin E and vitamin D, as well as chromium, calcium, zinc and other elements, so they are prone to pseudomyopia.
3. Too much stimulation by light and color: if children and teenagers often go to game halls, song and dance halls and other entertainment places or surf the Internet for a long time, their eyes will be stimulated by light and color in these places, so they are prone to pseudomyopia. The treatment of ametropic amblyopia is not timely: some children or adolescents with ametropic amblyopia will also be caused if they are not treated in time.
4. Pseudomyopia is generally due to working close for a long time, poor eye posture, lying on the table, lying in bed or reading in a turbulent and unstable carriage, too strong and too weak light, which often makes the ciliary muscles of the eyes in a tense and tired state, resulting in vision loss.
5. Most people suffering from pseudomyopia are unsanitary with their eyes, especially middle and primary school students. Their vision drops rapidly in a month or two or even a few weeks. If they are treated in time at an early stage and pay attention to maintenance, their vision can recover without wearing glasses. Pseudomyopia is only the abnormality of eye adjustment function. This change is reversible. Correct the bad eye habits in time, and then cooperate with the treatment method to alleviate eye muscle fatigue, the vision can be completely recovered. Mixed myopia, which accounts for the vast majority of juvenile myopia, is in the process of evolution from functional abnormality to structural abnormality. The process of deepening the degree of myopia is the process of changing the false components of mixed myopia into true myopia.
preventive methods:
1. Reduce the visual load. The time of continuous close eye use at one time should not be too long, and the time of using the computer should not be too long. After using the eye for about 45 minutes, rest for about 10 minutes and look far to relax the adjustment.
2. Develop a good habit of using eyes, keep a correct posture, keep the distance between eyes and reading materials at about 25-750px, don’t hold a pen too low, the height of tables and chairs is appropriate, keep the chest a fist away from the edge of the table, keep an appropriate distance between eyes and reading materials, use a standard size pencil to write, and don’t take a bus, walk, lie in bed, read or write in direct sunlight or dark light, These may play a positive role in the prevention and treatment of myopia.
3. Improve the visual environment and keep the appropriate brightness in the reading environment