Remember the cervicogenic myopia we mentioned before? As a kind of pseudomyopia, the symptoms will gradually get better as we change our eye habits in life. And with the increasing pressure of study and work, more and more friends will feel the soreness and fatigue of the eyes, and the symptoms often do not get better, but will slowly develop into myopia, affecting the quality of study, work and life. Today we will learn about myopia, a common disease of the eyes. I. Why is myopia? The eye uses the lens to image distant things on the retina, and when looking at near things, the muscles around the eye need to squeeze the lens to refocus the imaging position on the retina. As a result of eye fatigue, the ciliary muscle that squeezes the lens spasms and does not return to its original state for a while. When you look at things in the distance again, you will be imaged in front of the retina, making things blurry, which is called myopia. However, the eyes can recover after a period of rest, and this myopia is called pseudomyopia. But the eyes do not get rest for a long time, self-regulation function is reduced, making the lens slowly become convex, thickening, the front and rear diameter of the eye becomes longer, the eye can not be normal imaging, so the line into the true myopia. The only thing we can do is to prevent it. As a pathological change, true myopia is irreversible, we can only try to prevent myopia by adjusting our eye habits: 1, a good reading environment Do not read in direct sunlight or dim light to reduce the stimulation of the eyes. 2, correct study posture hand an inch away from the tip of the pen, chest a fist away from the edge of the table, eyes a foot away from the book, to reduce the use of eyes at close range. 3, proper rest in reading, studying, working for a long time with the eyes should be every thirty to forty minutes eye relaxation. You can look at the sky or things in the distance, which will help a lot in preventing myopia. 4, often do eye exercises Eye exercises are a set of health exercises to protect the eyes since school, spend a few minutes every day to do the correct eye exercises can effectively relieve the pressure around the eyes and nerves to prevent myopia. Tips: People who are already nearsighted can effectively reduce the growth of myopia by wearing glasses with the right prescription. If you squint without glasses, you will put pressure on your eyes to further deepen myopia, and may cause astigmatism. For those who feel eye fatigue from time to time, the health exercises for pseudomyopia that we introduced in our previous tweets are also very effective.