Teenagers read and write, watch TV and use computers for hours without rest. Some students even go to bed late at night, which not only affects their health, makes their eyes overburdened, but also easily causes accommodative (or functional) myopia, that is, pseudomyopia. In addition, the extraocular muscles will exert pressure on the sclera tissue of the eye wall, which will increase the intraocular pressure and make the intraocular tissue congested.
Don't bend over, don't read on your desk, and don't read sideways in bed. The distance between the eyes and the book should be 30-35cm, the distance between the body and the table should be about 10cm, and the angle between the book and the table should be 30-45 degrees. If you put the book horizontally on the desktop, bend your head forward when reading, which will easily make the book close to your eyes, increase the burden on your eyes by 2-3 times, lead to fatigue of neck muscles and neck back, and unconsciously lean forward. Bowing your head for a long time will lead to poor eyesight.
4. Try to reduce TV, computer, game machine and other electrical equipment exposed to human eye radiation, because X-rays radiated by kinescope will consume a lot of rhodopsin in retina, which will obviously reduce vision. The computer had better choose LCD to reduce the harm of electromagnetic waves to eyes. Students who often play video games are more likely to damage their eyesight. Students with low vision who play video games since childhood can't even correct their vision because of the impaired function of retina and macula.
5, work and rest time should be regular, and sleep should be sufficient. Lack of sleep can lead to conjunctival congestion, increased secretion, photophobia and tears, eye pain and other conjunctival and corneal inflammation. Try to avoid sand, smoke, ultraviolet rays, infrared rays, chemicals, medical supplies and other injuries to the eyes. Personal hygiene should be kept clean. Towels, washbasins, handkerchiefs and other personal items. It should be used exclusively by specialized personnel, and other people's articles should not be used, so as to avoid cross-infection, leading to eye diseases and decreased vision.
Some teenagers like to watch while walking, or read books in the walking carriage, which is not good for their eyes, because the carriage is shaking, their bodies are shaking, the distance between their eyes and books can not be fixed, and poor lighting conditions increase the burden on their eyes, which often leads to myopia. Teenagers should pay attention to protecting their eyes at ordinary times.