Whether a child’s vision of 4.9 is normal or not depends on the situation. If the child is under 6 years of age, a vision of 4.9 is normal; however, if the child is over 6 years of age, a vision of 4.9 is not normal, and the normal vision of a child over 6 years of age should be 5.0 or 5.0 or above.
Children’s vision development generally changes with age, children before the age of 6, the eyesight may not be well developed, so 4.9 is relatively normal, but if children after the age of 6, the vision is still 4.9, there may be a decrease in vision, usually due to overuse of the eyes, the use of electronic products for a long time, or caused by some eye diseases.
If the child is already 6 years old or above, then parents should pay attention to the child’s eyesight, go to the hospital in time to find out the cause of vision loss, and actively treat.