People have always thought that vision loss is “quietly” coming, until they find blurred vision, it is already done. In fact, before the vision loss, the occurrence of myopia is a harbinger, there are signals, here to tell you, I hope to draw attention to. Eye fatigue some senior elementary or middle school students, reading for a long time, the handwriting will overlap serial, look up and then look at the object in front of you, there is as if, floating unstable feeling. Some people look far away for a long time and then move their vision to near objects, or look near for a long time and then move to distant objects, there will be a brief blurring phenomenon in front of the eyes. These are all signs of eye ciliary muscle dysregulation and are caused by eye strain. In addition, some children and adolescents may have recurrent chalazion, mydriasis, or blepharitis. Although these children have a visual acuity of 1.0 or higher, they are already “playing” the prelude to myopia. Perceptual hypersensitivity, along with eye fatigue, is accompanied by burning, itching, astringency, and canker soreness in the eyes, and in severe cases, pain that spreads deep into the orbits and even causes migraines, as well as soreness in the occiput, neck, and back of the shoulders. Children with good grades may become bored with learning, lack of concentration in lectures, slow reaction, short temper, lack of interest in things they used to love, and decrease in academic performance. At night, they sleep a lot, sweat a lot, are easily tired, and have symptoms such as dizziness and loss of appetite. These changes are also signs that myopia is about to occur. The above three points are called “myopia precursor syndrome” by ophthalmologists. The first thing that occurs before myopia is not vision loss, but rather neurological symptoms. Myopia is not just a problem of the eyes. Myopia is not just a problem of the eyes, but is closely related to systemic changes. According to ophthalmologists, 40% of the aura symptoms of myopia first appear in the sensitive trigeminal and autonomic nervous systems. A fifth-grade student from an experimental elementary school had severe eyestrain and perceptual allergy symptoms 6 months before he came to the clinic. The examination revealed that the visual acuity of both eyes was 1.5. The intraocular pressure of both eyes was 15 mmHg, which was normal, and other tests were also within the normal range. After two weeks of treatment with anti-fatigue eye solution. The eye fatigue symptoms increased but did not diminish, and the visual acuity decreased to 0.8 in the right eye and 0.7 in the left eye, and a dilated eye exam revealed that he had 150 degrees of myopia in the right eye and 175 degrees of myopia in the left eye. It can be seen that myopia has precursors, so if you can detect myopia precursors early and go to an eye specialist for refractive examinations and treatment, you can prevent and treat pseudomyopia at an early stage.