A 4-year-old child’s vision of 4.8 is considered to be in the normal range, and it is normal to have mild hyperopia, which cannot be used to determine myopia or nearsightedness.
Due to the developmental stage of children’s eyesight and environmental stimulation and other factors are different, in the newborn infants and young children may not have fully developed eyesight, for 4-year-old children its visual acuity can be developed to 4.8 is considered to have reached the normal range, there may be mild farsightedness reserves, but can not be based on the visual acuity to determine whether the refractive errors such as nearsightedness or farsightedness state.
For 4-year-old children to determine whether there is myopia and other refractive errors, you need to improve atropine, tropicamide and other dilated pupil examination, based on the results of the optometric need for positive or negative lenses to judge, if myopia at this age is the need to attract enough attention.
It is recommended that children should be brought to the appropriate age to regularly improve the pupil dilation and other auxiliary examinations, timely detection of myopia and amblyopia and other conditions, and to be targeted treatment.