How much of a child's vision is normal?

According to the international standard visual chart, the child's visual acuity standard should reach 0.5 at the age of 3; the visual acuity should be about 0.6-0.7 at the age of 4-5; the visual acuity should reach 0.7-0.8 at the age of 6-7; and the visual acuity of the child over 8 years old should be above 1.0.

If the child's visual acuity is lower or higher than the normal range, it indicates that there is refractive abnormality, such as myopia, hyperopia or astigmatism, etc., it needs to be corrected according to specific conditions. Secondly, if the child's visual acuity is reduced, and the best corrected visual acuity is lower than normal, it indicates amblyopia exists.

If the visual acuity test results are abnormal, it needs to be corrected in time, and the visual acuity should be monitored regularly.