To prevent myopia, please put down your sweet drink
(text / photo) reporter Zhang Hua of jinyang.com correspondent Liu Yuanling Feng Qingyang
The new semester begins, children suddenly from the leisure vacation into the intense learning stage, the eye is estimated to be the first organ involved. Huang Xuelin, director of Ophthalmology Department of Guangdong maternal and child health hospital, reminded that in the process of study, in addition to avoiding bad eye habits, we should also eat less sweets and drink less carbonated drinks, because they can affect the osmotic pressure of optic nerve and lens, and even promote the occurrence of myopia.
In 2017, the myopia rate of primary and secondary school students in Guangzhou reached 49.1%
What is myopia? Director Huang Xuelin said that when myopia is relaxed, the parallel light from a distance passes through the refractive system of the eye and gathers into the focus before the retina, while the unclear object image is formed on the retina, resulting in a significant decrease in distant vision. Therefore, myopia can only be seen close.
According to the latest research report of the World Health Organization, the number of myopia in China is up to 600 million. The myopia rate of high school students and college students has exceeded 70%, and it is increasing year by year. The myopia rate of teenagers is the highest in the world, and the myopia rate of primary school students is close to 40%. Myopia has become a huge obstacle to the healthy growth of children.
Statistics show that nearly half of the students in a class need to wear glasses, while the World Health Organization data shows that the myopia rate of primary and secondary school students in the United States is only 10%, that is to say, the myopia rate of primary and secondary school students in Guangzhou is nearly four times higher than that in the United States. Therefore, the prevention and treatment of myopia is urgent.
Eating lots of sweets can also lead to myopia
Director Huang Xuelin said that childhood and adolescence is an important stage of visual development. Although there are many reasons for the occurrence and development of myopia, the following two points are worth parents’ attention:
1. Bad eye use habit
Bent back when reading or writing, too close distance between eyes and books, supine or prone reading, long-term use of electronic products, long-term close use of eyes and reading distance can lead to ciliary muscle and extraocular muscle in a high tension state, lens curvature increases, eye ball wall gradually extends, eye axis is elongated, and finally develop into myopia.
2. Eating habits wpap60302br
Eating habits can also affect the occurrence of myopia. Director Huang Xuelin believes that eating a lot of sweets and drinking carbonated drinks will increase the incidence of myopia. Studies have found that when sugar is metabolized in the human body, it needs a lot of vitamin B1 to help, at the same time, it consumes a lot of calcium in the body. Vitamin B1 has a maintenance effect on the optic nerve, and its content will affect the state of the optic nerve, while calcium can not be replaced in maintaining the osmotic pressure of the lens. Eating too much sweets and carbonated drinks will affect the osmotic pressure of the optic nerve and lens, and promote the development of the near future The occurrence of visual acuity.
Illustration: eat less sweets and drink less carbonated drinks
In addition, if the child partial to food, nutrition imbalance, will also affect the development of the eyes. Children try to avoid partial diet, can eat more green vegetables, fruits, soy protein, etc., to promote the development of the retina.
Parents should remind their children to take good care of their eyes every day
Once myopia, without protection, is likely to continue to deteriorate, or even develop into high myopia. Sun Wei, deputy chief ophthalmologist of Guangdong maternal and child health hospital, stressed that from the first day of school, parents should remind their children to prevent myopia, maintain good reading and writing habits, ensure adequate outdoor activities and stay away from electronic products.
1. Have good reading and writing habits. The distance between the eyes and the book is about 33cm. Keep a good sitting posture. Keep the body straight. Put the head straight and the shoulder flat. The distance between the chest and the table is one punch. When holding the pen, the hand is about 3.3cm away from the tip of the pen.
2. Ensure adequate outdoor activities or sleep time. Authoritative research shows that every day to stay outdoors for 2-3 hours or more, 1 hour in the sun, has an important role in the prevention and control of myopia. Adequate sleep is also very necessary, lack of sleep is easy to lead to circadian rhythm disorder, affect the normal development of the eyeball, so to ensure 8-11 hours of sleep a day. In addition, sleep to maintain a dark environment, the lack of melatonin secretion will also lead to myopia.
3. Stay away from electronic products. When the eyes look at the electronic screen for a long time, the blinking and eye activity times are reduced, and the eyes are prone to dryness, fatigue and foreign body sensation. LED screen light source contains a lot of blue light, which has strong penetrating power to eye tissue, and can penetrate cornea and lens to reach and damage retina. In addition to small screen and small font, mobile phone is easy to hurt people’s eyes because of electromagnetic wave. The flicker of electronic products can also increase the incidence of myopia.
Photo: regular ophthalmic examination, early detection of myopia
Tips: parents discover their children’s myopia as early as possible
Every six months time to the child eye examination, clear whether the child has myopia. If parents find that their children squint, tilt their head, squint, or blink, frown, or pull the corners of their eyes frequently, they should see a doctor as soon as possible and have a professional examination. According to the child’s condition, mydriasis can determine whether the true myopia is true or not. After diagnosis, they should wear glasses or orthokeratology glasses as soon as possible.