Whether a child’s vision of 4.8 is normal or not should be based on age. If the child is under 5 years of age, then a vision of 4.8 is normal. If the child is over the age of 5, then a vision of 4.8 is not normal. There are usually two standardized scales for vision screening. The Chinese Visual Acuity Scale (CVAS), also known as the five-point scale, is used for a visual acuity of 4.8. There is also the International Visual Acuity Scale, also called the Decimal Visual Acuity Scale. A 5-point visual acuity of 4.8 is equivalent to a decimal visual acuity of 0.6. The development of eye sight is a gradual process of improvement, and the standard of normal vision is usually different for children of different ages. It is generally believed that children around 3 years old should have naked eye vision between 0.4-0.5, 4-5 years old children have naked eye vision between 0.5-0.6, at the age of 6 years old naked eye vision can reach about 0.8, and at the age of 8 years old the development of the adult state reaches 1.0. Therefore, if the child is under five years of age, the child’s eyes are in the developmental stage of vision and a visual acuity of 4.8 is normal. If the child is older than 5 years old, the visual acuity of 4.8 is not normal, may be due to overuse of eyes, eye diseases, etc. It is recommended that the child go to the hospital in time for examination, optometry, so as not to aggravate the situation of vision loss.