Myopia makes distant objects unclear because parallel rays of light enter the eye and focus in front of the retina. If the eye is corrected with a concave lens in front of the eye, so that the ambiguous image in front of the retina moves backward and falls exactly on the retina, the object will become clear. This will make work and study easy and enjoyable. Therefore, myopic eyes should wear glasses. Teenagers with mild myopia can see near objects clearly without glasses, which will not aggravate eye adjustment and deepen myopia. For myopia above -3.0DS, glasses are required for both near and far vision. If you don’t wear glasses for near vision, the closer you get, the more your eye adjustment will increase, which will lead to deeper myopia. For high myopia, it is difficult to stop the progression of myopia with or without glasses. There are some people who have been myopic for many years and would rather not be able to see objects in the distance, squint to see things, read and write rather than let the tip of the nose touch the book, endure eye distension, headache, but also do not wear glasses. What do they really think? Some people say: it is hard to see with glasses, and the appearance will change after a long time. Some parents are afraid that their children will lose their glasses, or break them and hurt their eyes, which is too troublesome. Others say: don’t wear glasses, the more you wear them, the deeper they get, the more you put them on, the more you can’t take them off. These ideas and practices are not right. Myopic patients have experienced, whether reading, writing and various operations, always more than the average person will be the distance of the object put closer, highly myopic and even put closer. The closer the object is to the eye, the more the regulation should be strengthened, in order to see the object in front of you, you must make the eyeball turn inward, the eyeball turn inward is to rely on the contraction of the internal rectus muscle to complete. This is called the collection effect, the closer the distance, the collection effect is bound to strengthen, collection and regulation have a close relationship with each other. If myopia patients overuse collection and regulation for a long period of time, it will also cause visual fatigue. If this state is not relieved, myopia will deepen. In order to avoid this situation, it is necessary to wear appropriate myopia glasses. Improved visual acuity, relieve the excessive collection and regulation, will not squinting to see things, if insist on not prescription glasses, long-term, the extraocular rectus muscle long-term compression of the eye will affect the development of the eye, so that the anterior and posterior diameters of the eye continue to lengthen, will cause myopia continues to increase.