Abstract: when children or teenagers read or write, the distance between their eyes and books or words is often less than 33 cm. Their visual angle 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.
1. What is pseudomyopia
myopia? Generally speaking, it is a state in which the eyes can see close but not far, that is, they can only see close but not far. Children and teenagers are studying in school. They spend a long time reading, writing and other near work. When looking at near objects, the eyes should use the adjustment function, that is, the ciliary muscle in the eyes should contract. Long-term near work or improper overuse of the eyes, such as reading novels, playing video games and watching TV, can make the ciliary muscle contract continuously and be in a state of spasm, If there is no pathological change in the fundus, it is called pseudomyopia, also known as regulatory myopia; If pathological changes occur in the fundus, it is called true myopia.
II. Cause of disease
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, color and other physical and chemical stimuli in these places, so they are prone to pseudomyopia.
4. 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.
III. disease prevention
people suffering from myopia should eat less sweets. Sweets are one of the foods that students like very much, but maybe you don’t understand that sweets can promote the development of myopia. This is because the sugar in sweets needs a lot of vitamin B1 when it is metabolized in the human body. If the body takes too much sugar, vitamin B1 will be relatively insufficient. Excessive intake of sugar can reduce calcium in human body, resulting in weakening of eye elasticity and aggravation of myopia. For the sake of eye health, students who like to eat sweets quickly control their mouths. Try to reduce the intake of sucrose, glucose and fructose, and appropriately increase the intake of chromium and calcium rich foods such as lean meat, eggs, milk, fish and shrimp, and vitamin B1 rich foods such as brown rice and sesame, which can help eyes supplement nutrition and alleviate fatigue.
in addition, it is suggested that students with myopia can eat more carrots, white radishes, cucumbers, bean sprouts, green vegetables, onions and other foods, which are very good for your eyesight.
teach children to develop good reading and writing posture, and keep a distance of about 30 cm between their eyes and books. Teach children to develop correct reading and writing posture, and keep a distance of about 30 cm between their eyes and books. The reading time should not be too long. Every 40 ~ 50 minutes, you should rest for 10 ~ 15 minutes, close your eyes or look into the distance, watch green plants or do eye exercises to prevent excessive eye fatigue. Don’t read books and newspapers whose handwriting is too small or vague. Don’t write too small. Educate children to correct unreasonable eye habits, such as lying on the table, reading or writing with their heads tilted, reading in bed, reading at dinner, and reading in a moving car. When reading and writing, the light should be moderate, not too strong or too dark. The light should be shot from the front left to avoid the shadow of the hand hindering the line of sight.