The problem of myopia has gradually become an inevitable thing in the market, especially the problem of juvenile myopia. Now the situation is more serious. Do you know what causes juvenile myopia?
Causes of juvenile myopia
1. Too close eye distance: a large number of epidemiological studies have shown that visual proximity load is the most important cause of myopia. Visual proximity load includes too close eye use and too long visual proximity time. There is dose gradient effect in the occurrence and development of close work and myopia.
2. Using eyes for too long: This is also a common cause of myopia. Watch TV for 3-4 hours without rest, or even go to bed late at night, which makes the eyes overburdened. The muscles inside and outside the eyes are in a state of tension for a long time without rest. Over time, they feel blurred when looking at a distance and form myopia.
3. The lighting light is too strong or too weak: if the light is too strong, such as sunlight, it will cause strong reflection and stimulate the eyes. The light is too weak and the written lighting is insufficient. The eyes can't clearly see the font, and the head will move forward and get close to the book. Both of the above conditions can make the eyes easy to fatigue, and the eyes are excessively adjusted or convulsed to form myopia.
4. Lack of sleep: when sleep is insufficient, the next day is depressed, dizzy, the brain does not have enough rest, fatigue is not eliminated, which increases the burden on the eyes and promotes the occurrence of myopia. Lack of sleep is a very important cause of myopia.
5. Parental inheritance
Myopia more than 600 degrees has a high probability of passing on to their children, and high myopia belongs to invisible inheritance; The genetic probability of high myopia in one parent is low. If both parents are high myopia, the genetic probability is close to 100%.
6. Insufficient mineral elements
Medical research shows that mineral elements such as calcium and chromium are an important condition to ensure the normal vision of teenagers. Calcium plays an irreplaceable role in maintaining the normal pressure of eye crystals, and chromium plays an irreplaceable role in maintaining eye diopter. In particular, it should be noted that 80% of chromium will be lost if the rice and flour are processed too fine. Therefore, eating some coarse grains appropriately is beneficial to the health of eyesight.
Main hazards of myopia
1. Lead to complications. If myopia is not treated in time, it will not only deepen the degree and eventually become high myopia, but also lead to complications such as retinal detachment, macular hemorrhage, glaucoma and cataract, and even blindness.
2. Genetic offspring. Modern medicine has proved that the acquired myopia, if not treated in time, will also be passed on to future generations.
3. Affect children's future. Children suffer from myopia. There are great restrictions on their choice of major and employment, and their future is greatly affected.
4. Endanger physical and mental health. Due to the child's myopia, he is unable to participate in a variety of sports activities, which affects the child's normal physical development, resulting in the child's physical weakness and illness, and greatly affects his physical and mental health.