The reserve of farsightedness in children aged five is zero. Children are at risk of developing myopia, but there is no way to tell when it will appear, and it is related to eye habits.
Because eye development improves gradually with age, under normal circumstances, children before the age of 8 have a reserve of hyperopia. The reserve of hyperopia varies at different ages. For example, the physiologic hyperopia of a 3-year-old child is about 200 degrees, and that of a 5-year-old child is about 150 degrees. If the reserve of hyperopia in a 5-year-old child is zero, the child is at risk of developing myopia, but the timing of the onset of myopia cannot be determined.
Children with fast decreasing reserve of hyperopia should pay attention to improving bad eye habits, avoiding prolonged close-distance eye use, controlling the use of cell phones and computers, and increasing the time for outdoor exercise to reduce the risk of myopia.
Children with myopia are advised to seek timely hospital consultation to assess their condition and follow medical advice for treatment and care.