How many degrees of farsightedness is normal for children starts with how much accommodation the human eye can have when looking at distance. Adjustment ability refers to the ability of the human eye to make the focal point that is out of the retina return to the retina through the flexible change of the lens when the object is blurred, so that the blurred image on the retina becomes clear. As long as the farsightedness is less than or equal to the regulation ability of human eyes, the regulation of human eyes can pull the focal point of farsightedness back to the retina, so that the object can become a clear image on the retina, and the vision of farsightedness can reach normal, and the eyes do not have any other symptoms, the farsightedness is normal, so the normal farsightedness is not a specific value, but is determined by the regulation ability. The adjustment ability of human eyes is closely related to age, the younger the age, the stronger the corresponding adjustment ability, the greater the upper limit of the normal range of hyperopia, and vice versa, the smaller the upper limit of the normal range of hyperopia. Children’s ability to adjust when looking at distance is generally around three hundred degrees, that is, within three hundred degrees of farsightedness, the eye can make the focus fall on the retina through its own adjustment ability, in the retina into a clear image, so for children generally ≤ 300 degrees of farsightedness are normal. Generally speaking, children aged 4 and below have about 300 degrees of hyperopia, children aged 5 or 6 have about 200 degrees of hyperopia, children aged 8 have about 150 degrees of hyperopia from astigmatism, and children aged 12 have about 100 degrees of hyperopia, all of which are normal. If the child is not farsighted during infancy, but orthophoric, i.e., the refractive power of the eye is zero, it means that the child’s eye axis is developing too fast, and at this rate, it is likely that myopia will be formed before the age of eight. In addition, if the child is farsighted at the age of four, but the degree of farsightedness is ≤150 degrees, and at the age of six the degree of farsightedness is ≤100 degrees, it is possible that the child will develop myopia in the future. This means that it is safer to retain a sufficient amount of hyperopic reserve, and the less likely to develop myopia. In addition, because each child’s developmental status is different, determining whether a child’s hyperopia is a normal physiological phenomenon or a pathological phenomenon should also be judged by the clarity of the farsightedness after wearing farsightedness glasses. If a child still has trouble seeing after wearing the corresponding degree of farsightedness glasses, it means that the child’s farsightedness is not physiological, but probably amblyopic and needs immediate treatment.