What is the normal range of vision for four-year-olds?

The normal range of four-year-old children's vision is greater than 0.5.

Vision is the ability of the retina to distinguish the minimum distance between two points, of which recognizing distant targets is called far vision, and distinguishing near targets is called myopia. The commonly used examination methods in clinical practice include far vision examination, myopia examination, etc. For four-year-old children, if vision is greater than 0.5, it is usually considered to be in the normal range, indicating that there is no obvious eye abnormality. If the visual acuity is lower than 0.5, it indicates that the visual acuity is low. Generally, it is related to hyperopia, astigmatism, myopia, cornea and retinopathy. It is recommended to seek medical treatment in time and clarify the cause by refractive examination, etiological examination, fundus examination, etc.