Hyperopic reserve refers to the reserve of the eye’s ability to adjust, a concept commonly used in the vision status of young children through preschool. When a newborn is born, due to growth and development, the eye is small and the anterior-posterior axis of the eye is short, and the eye will appear hyperopic. As the eye axis gradually lengthens during growth, vision will gradually develop to normal vision, and there will still be about 200 degrees of mild farsightedness in preschool, which is part of the farsightedness, the farsightedness reserve. Because the children’s eye adjustment ability is in a relatively strong state, this part of the farsighted reserve does not affect the children’s vision, in the process of using the eyes later, because of the close use of the eyes, resulting in poor lens adjustment, making vision gradually to myopia, in such a state, the farsighted reserve will offset part of myopia. Therefore, the presence of a hyperopic reserve can slow the onset of myopia, but it may also delay the detection of early myopia. It is recommended that when children reach school age and begin to use their eyes at close range for long periods of time, parents should pay attention to adjusting children’s sitting posture, paying attention to eye distance, and controlling the use of electronic devices; they can also play appropriate outdoor sports and look at green plants to help relax eye muscles; after a period of eye use, they can do eye exercises or rotate their eyes to prevent myopia.