Visual reserve, also known as hyperopic reserve value, is normally a state of hyperopia in both eyes of a newborn baby, which gradually normalizes with growth and development. In the course of a certain age, the child has a certain state of hyperopia, and the degree of hyperopia is within the normal range, the child’s vision is also better. The anterior and posterior diameters of the eyeballs are the main causes of vision, too long causes myopia, too short produces hyperopia. In children and adolescents, the eye muscles are highly adjustable and the eyeballs are developing rapidly. Normal vision can easily hide the changes in the eyeballs and create the illusion of normal vision. The farsightedness reserve is good for avoiding premature nearsightedness in children, and is a better state to be in. When people are born, they are all in a certain state of farsightedness, and as they grow and develop, their eyeballs gradually become bigger and bigger, and their farsightedness will become lower and lower. If the early stage of myopia is common with a decrease in farsightedness reserve, you need to choose a professional optometric organization for accurate examination and diagnosis to prevent myopia.