Normal visual acuity for a 6-year-old child is 0.8 and above. When the examinee’s visual acuity reaches 1.2, 1.5 or even 2.0, it means better vision. Naked eye vision refers to the result obtained when the vision examination is carried out without the aid of any tools. 1.0 for adults represents normal naked eye vision, and 1.0 or above, such as 1.2, 1.5, indicates that the examined person has better eyesight. 6-year-old children whose vision is still underdeveloped can reach 0.8, and if the children’s vision is well developed, it can even reach 1.0. If the visual acuity of a 6-year-old child is lower than 0.8, it is often due to refractive errors, such as reading posture, long-term use of electronic products, etc., resulting in myopia, which leads to vision loss, and the child can wear appropriate glasses to correct myopia and improve vision. It is recommended that children with vision loss should consult a doctor in time to assess their condition and follow the doctor’s instructions for treatment.