One of the most frequently asked questions by many parents after giving their children glasses for myopia is: should I wear glasses when reading and writing? The answer is: it depends on the specific situation. To figure out what this “specific situation” is, we first need to clarify a few concepts. When the human eye is looking at the near, it needs to be adjusted to see the words on the book, and this process is directly involved by the lens of the human eye. The lens is like a convex lens, and when looking close the lens becomes more convex, increasing the refractive power in order to see close and clear. Generally speaking, people are accustomed to read at a distance of 33-40cm, in order to see the words on the book, for the 33cm reading distance, the human eye needs to pay 3.0D of adjustment force. However, people are fond of laziness, and adjustment is no exception. For a 33cm reading distance, many people may use 2.5D of accommodation to see clearly, which results in a difference between the actual accommodation used and the theoretical value, and this difference is medically called accommodation lag, which causes the clearest image to be located at the back of the retina, and this state is extremely detrimental to the control of myopia progression. In addition, the visual axes of both eyes converge when looking at the near, a process called pooling, and pooling function is something that needs to be considered during the lens fitting and wear process. In the past, doctors believed that the onset of myopia was related to the progression mechanism and accommodation, and that accommodation itself caused the onset and progression of myopia, a notion that has been proven to be false. Recent studies have found that myopic patients are not over-regulated, but rather under-regulated, with decreased regulatory flexibility and more pronounced regulatory lag. Therefore, from the perspective of clinical intervention, all interventions should start with improving accommodation and accommodation flexibility and reducing accommodation lag. In addition, eye position is also an issue that should be carefully considered in the process of lens prescription. Generally speaking, there are very few completely orthotropic eyes in the population, and all of us have some degree of internal or external obliquity in our eyes, so that we can see far away and close up differently, and this needs to be taken into account in the process of prescription and wearing of glasses. Therefore, whether or not to wear glasses for homework must be “case-by-case analysis”. For adolescent myopia patients with poor adjustment strength and lack of adjustment flexibility, they need to wear glasses when looking at the near (not wearing glasses will cause further weakening of the adjustment function), and must be accompanied by adjustment strength training; for patients with excessive adjustment tension or even adjustment spasm, they can not wear glasses when looking at the near, and at the same time, they should relax the adjustment and look at the distance more, and if necessary, they can consider combining with some ciliary muscle paralyzing agents to relax the adjustment. For patients with external obliquity and inadequate pooling function, they must wear glasses when looking at the near (in fact, this part of myopia patients account for the majority); while for patients with internal obliquity and excessive pooling function, they can reduce the number of degrees or even not wear glasses when looking at the near, the specific number of degrees to be reduced needs to be decided according to each person’s eye position when looking at the near. The classification of these cases is to be judged by the optometrist at the regular hospital, and the specific indicators of binocular vision function need to be checked before deciding.