Clinically normal visual acuity for a five year old child is around 0.6-0.8 or even higher. Visual acuity refers to the degree of visual acuity, which can reflect the visual function of the macula, including distance vision, near vision, also known as reading vision. The visual acuity measured without glasses in the daily refractive state is the naked-eye visual acuity, and usually the naked-eye visual acuity of a five-year-old child should be 0.6-0.8 as normal. Regardless of whether it is a distance vision chart or a near vision chart, the 1.0 visual acuity chart is designed according to the standard of 1° angle. For children over 3 years of age, general vision screening is mainly done with standard logarithmic visual acuity charts, while graphic visual acuity charts can be used for children who are unable to cooperate with the screening. It is recommended that children with vision abnormalities seek medical attention to evaluate their condition and to treat them as directed by a physician.