Standard vision is usually checked at a range of 5 meters away. This is because when light enters the eye at a range other than 5 meters, the eye’s regulating muscles are more relaxed and less likely to lead to myopia formation. Once it is less than 5 meters, the burden of visual regulation increases to varying degrees. ”Hey, how come the words on the blackboard are getting blurred?” “How come my eyesight is getting worse?” At school, this is a problem that many children will encounter and report to their parents. And after parents have heard it, the most conventional approach may be to ask their children to move their seats forward. Unbeknownst to them, the consequence of doing so may well be that their child’s eyesight is declining faster. The standard vision check is usually done at a range of 5 meters away. This is because when light enters the eye at a range other than 5 meters, the eye’s regulating muscles are more relaxed and less likely to lead to the formation of myopia. Once it is less than 5 meters, the burden of visual regulation is increased to varying degrees. In this sense, if a child rushes to sit in the front row after his eyesight decreases, he only temporarily shortens the distance between his eyes and the object, makes up to see things clearly, and does not regulate and see things within the normal distance. Moreover, the closer the seat is to the blackboard, the easier it is for the eyes to become fatigued, which in the long run can cause ciliary muscle spasm and produce symptoms such as eye swelling, dizziness, and vision loss. In case the child is only pseudomyopia, deliberately adjust to the front row, but may become true myopia, or make myopia further deepened. Therefore, doctors suggest that if there is a sudden loss of vision and blurred vision, you should first go to a professional eye hospital for an optometry to determine the authenticity of myopia. If it is pseudomyopia, you should adjust your vision under the guidance of a doctor to relieve eye fatigue and release ciliary muscle spasm in time; if it is true myopia, you should wear a pair of suitable glasses to prevent the degree from deepening.