Whether a child with a visual acuity of 4.9 is considered myopic or not is mainly related to age. Usually before the age of 6, the visual function is not fully developed, the visual acuity of 4.9 is generally not considered myopia, if the child is already older than 6 years old, it may also be mild myopia. Before the age of 6, the vision may not be fully developed, still in the period of refractive error, at this time the visual acuity of 4.9 can not be clearly indicated that myopia, to be visually mature, visual acuity can be gradually increased, in this case the child’s visual acuity of 4.9 is not generally considered to be myopia. After the age of 6, the visual function has been developed and mature, the child’s visual acuity of 4.9 may also be a slight myopia, mainly in the long time to see electronic products, bad eye habits, etc. Children with visual acuity of 4.9 may also be myopic. If your child has a visual acuity of 4.9, it is recommended that he or she go to the hospital in time to have a clear examination and then actively cooperate with the doctor to regulate the vision.