Abstract: in medical research, it is found that when noise acts on auditory organs, it will also “spread” to visual organs through the action of nervous system, so as to weaken people’s vision. In short, noise can reduce the sensitivity of human eyes to brightness.
nowadays, there are more and more teenagers and children with myopia. We all know that TV, mobile phone, iPad and other electronic products will cause children’s vision problems. Li Jianhua, director of the Department of optometry and myopia prevention and control of Guangzhou Aier Eye Hospital, reminded that in addition to avoiding these visual threats common in daily life, there are also these factors that you may not know as a parent.
eyesight killer 1: dessert
survey found that children who like to eat dessert and drink soft drinks are more likely to be myopia, and drinking more milk can delay myopia. In this regard, the metabolism of sugar in sweets and carbonated drinks in the human body requires a lot of vitamin B1 and reduces the content of calcium in the body. Calcium is the “protector” of eye tissue. The lack of calcium in the body will not only reduce the elasticity of the retina, increase the pressure in the crystal body and lengthen the anterior and posterior diameter of the eyeball, but also cause degenerative lesions of the cornea and ciliary muscles, Thus, the elasticity of the eye wall is weakened and myopia is deepened.
in addition, eating too many sweets will also lead to the increase of blood glucose, plasma osmotic pressure, aqueous humor and lens osmotic pressure. Once the lens convexity and diopter increase, myopia will also come to the door.
vision Killer 2: noise
we all think that noise will have an impact on hearing and psychology, but we never expected that noise will also affect vision, especially for children who are still in the stage of eye development.
have found in medical research that when noise acts on auditory organs, it will also “affect” visual organs through the action of nervous system, weakening people’s vision. In short, noise can reduce the sensitivity of human eyes to brightness. The research of
experts shows that when the sound intensity is above 90 dB, the sensitivity of rod cells in the fundus retina to distinguish light brightness begins to decline, and the time to identify weak light response is prolonged. When it exceeds 45 dB, 40% of people have dilated pupils, and when it reaches 115 dB, the adaptability of eyes to light brightness decreases by 20%, accompanied by the weakening of color perception. The third killer of
: learning the piano too early
parents have worked hard for their children’s wide interests. Learning the piano has almost become the standard configuration of children’s interest classes now, and some even send their children to interest classes from the age of 4. Unexpectedly, it has also become one of the child’s eyesight killers. Director Li Jianhua of
explained: at present, there is no epidemiological statistical data to prove that there is a direct relationship between piano practice and myopia. From our clinical reception, myopia is indeed more common among piano children. Usually, preschool children’s eye development is in the golden period, and children’s vision is not fully developed and mature. Practicing the piano too early without paying attention to protecting eyesight, children have a high probability of myopia. Moreover, the characters of the piano score are usually relatively small. When children practice the piano, they look at the piano score and the keyboard, and they look at it from a close distance for a long time, which is more likely to make people feel tired. Premature and long-term excessive piano practice will accelerate the development of eyeball emmetropia and consume the original hyperopia too early. If it is not corrected in time, children are more prone to myopia. Also, if both parents are highly myopic and have a family history of high myopia, the child has a high probability of myopia.
in short, it seems that practicing the piano causes children’s myopia. In fact, there are many factors behind it, such as children practicing the piano too early, using their eyes too much at close range, and finally children’s myopia. The fourth killer of
: psychological factors
do not seem to match the decline of vision, but a data at hand shows that it is not so. According to the observer, psychologists and ophthalmologists conducted a sample survey of 4000 young people with myopia. The results show that the general decline of young people’s vision is closely related to their psychological factors.
in addition, poor family environment also affects children’s vision. Li Jianhua, director of the Department of optometry and myopia prevention and control of Guangzhou Aier ophthalmic hospital, said that discord between husband and wife, tension between parents and children, and abuse of children by parents can cause visual impairment in children, which is mainly seen in preschool children and often ignored. Adult vision is also related to psychology. Central retinal and choroidal lesions are a common eye disease, which can be seen in adults. The patient’s visual acuity can suddenly decline significantly. According to clinical statistics, more than 90% of patients have suffered psychological trauma before the onset of eye disease. After the patient’s psychology is comforted, the eye disease can be cured, but there are also a few patients who can’t recover for a long time and even become blind. In daily life, there are cases of crying and blindness due to excessive sadness.